*AI Summary*
*# *Domain Analysis and Persona Adoption**
*Domain:* Linguistics / Phonetics and Phonology / Sociolinguistics
*Expert Persona:* Senior Phonetician and Dialectologist (specializing in English Accents and Acoustic Analysis)
*Recommended Reviewers:*
This material is best reviewed by the *Board of the International Phonetic Association (IPA)* or a *Technical Committee of Forensic Linguists and Dialectologists.* These experts possess the necessary background in acoustic phonetics, articulatory mechanisms, and the sociolinguistic evolution of the English language to evaluate the shift in diphthong trajectories and the rhotacization of the GOAT vowel.
---
### *Abstract*
This analysis examines the diachronic and synchronic evolution of the "GOAT vowel" ([oʊ]) in Australian English (AuE). While traditional General Australian English (GenAus) is characterized by a fronted glide—moving from an open-central starting point toward a rounded-front position (approaching [ɥ])—younger speakers are increasingly exhibiting rhotacization (r-coloring) within the diphthong’s offset. This rhotacized glide approximates the acoustic signature of a North American "bunched r," leading to perceptual confusion for non-native listeners (e.g., the "aur naur" meme). The study utilizes acoustic modeling, MRI, and ultrasound data to distinguish this internal rhotacization from "intrusive r" and explains the phenomenon via three-dimensional vowel space analysis. Specifically, the rhotacization is defined by a significant lowering of the third formant (F3), representing a further lowering and fronting of the existing GenAus glide trajectory.
---
### *Phonetic Analysis: The Evolution of the Australian GOAT Vowel*
* *0:01 Phonetic Perceptual Bias:* Initial cross-dialectal testing demonstrates that the Australian GOAT vowel in isolation is often misidentified by non-Australians as rhotacized American vowels (e.g., "stone" perceived as "star," "zone" as "darn") due to the specific trajectory of the glide.
* *0:45 Transcription Inaccuracy:* Current lexicographical standards (e.g., the *Macquarie Dictionary*) often utilize the [ʊ] symbol for the GOAT glide. This is phonetically inaccurate as [ʊ] is a "checked vowel" that cannot occur in word-final positions; the use of the glide symbol [w] or [ɥ] is required for phonetic rigor.
* *3:32 The GenAus Fronted Glide:* General Australian English is distinguished from British or American accents by a glide that moves up and forward rather than up and back. This movement approximates the French [ɥ] glide (as in *huit*), involving both tongue fronting and lip rounding.
* *6:05 Rhotacization in Younger Speakers:* A significant phonological shift is observed in younger demographics where the GOAT glide glides into a "bunched" or "molar" r-sound ([ɹ̈]). This results in the r-colored diphthong [ʌɹ̈].
* *7:33 Articulatory Variability:* The rhotacized sound is achieved through diverse articulatory means—either a "bunched" tongue body or a "retroflex" tip. Despite different tongue shapes, both articulations aim to produce the same acoustic result: a lowered third formant (F3).
* *10:33 Sociolinguistic Impact:* The extreme rhotacization of "Oh No" ([ʌɹ̈ nʌɹ̈]) has gained cultural visibility via social media (the "aur naur" meme), though the degree of rhotacization varies significantly among individual speakers.
* *11:51 Distinction from Intrusive R:* Unlike "intrusive r" (e.g., "law and order"), which is a sandhi phenomenon occurring between two vowels, the rhotacized GOAT vowel is an internal component of the phoneme itself and can occur in isolation or before consonants.
* *12:57 Interaction with Hard Attack:* The rhotacized quality is preserved when a speaker utilizes a "hard attack" (glottal stop) before a following vowel. If a smooth transition is made, the speaker typically reverts to a standard [w] glide to avoid phonotactic violations (e.g., "koala" is never pronounced with an internal [ɹ̈]).
* *14:27 3D Acoustic Explanation:* Conventional 2D vowel charts (F1/F2) fail to illustrate r-coloration. By adding the third dimension (F3 resonance), it is revealed that the "new" Australian GOAT vowel is simply a deeper extension of the existing GenAus trajectory into the lower F3 space.
* *15:58 Conclusion on Trajectory:* The shift represents an intensification of existing dialectal trends; younger speakers are pushing the glide further "down" into the acoustic space, making the vowel more distinctively Australian.
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Fluidigm Polaris Part 2- illuminator and camera
mikeselectricstuff
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Fluidigm Polaris part 1 : • Fluidigm Polaris (Part 1) - Biotech g...
Ebay listings: https://www.ebay.co.uk/usr/mikeselect...
Merch https://mikeselectricstuff.creator-sp...
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mikeselectricstuff
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40 Comments
@robertwatsonbath
6 hours ago
Thanks Mike. Ooof! - with the level of bodgery going on around 15:48 I think shame would have made me do a board re spin, out of my own pocket if I had to.
1
Reply
@Muonium1
9 hours ago
The green LED looks different from the others and uses phosphor conversion because of the "green gap" problem where green InGaN emitters suffer efficiency droop at high currents. Phosphide based emitters don't start becoming efficient until around 600nm so also can't be used for high power green emitters. See the paper and plot by Matthias Auf der Maur in his 2015 paper on alloy fluctuations in InGaN as the cause of reduced external quantum efficiency at longer (green) wavelengths.
4
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1 reply
@tafsirnahian669
10 hours ago (edited)
Can this be used as an astrophotography camera?
Reply
mikeselectricstuff
·
1 reply
@mikeselectricstuff
6 hours ago
Yes, but may need a shutter to avoid light during readout
Reply
@2010craggy
11 hours ago
Narrowband filters we use in Astronomy (Astrophotography) are sided- they work best passing light in one direction so I guess the arrows on the filter frames indicate which way round to install them in the filter wheel.
1
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@vitukz
12 hours ago
A mate with Channel @extractions&ire could use it
2
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@RobertGallop
19 hours ago
That LED module says it can go up to 28 amps!!! 21 amps for 100%. You should see what it does at 20 amps!
Reply
@Prophes0r
19 hours ago
I had an "Oh SHIT!" moment when I realized that the weird trapezoidal shape of that light guide was for keystone correction of the light source.
Very clever.
6
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@OneBiOzZ
20 hours ago
given the cost of the CCD you think they could have run another PCB for it
9
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@tekvax01
21 hours ago
$20 thousand dollars per minute of run time!
1
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@tekvax01
22 hours ago
"We spared no expense!" John Hammond Jurassic Park.
*(that's why this thing costs the same as a 50-seat Greyhound Bus coach!)
Reply
@florianf4257
22 hours ago
The smearing on the image could be due to the fact that you don't use a shutter, so you see brighter stripes under bright areas of the image as you still iluminate these pixels while the sensor data ist shifted out towards the top. I experienced this effect back at university with a LN-Cooled CCD for Spectroscopy. The stripes disapeared as soon as you used the shutter instead of disabling it in the open position (but fokussing at 100ms integration time and continuous readout with a focal plane shutter isn't much fun).
12
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mikeselectricstuff
·
1 reply
@mikeselectricstuff
12 hours ago
I didn't think of that, but makes sense
2
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@douro20
22 hours ago (edited)
The red LED reminds me of one from Roithner Lasertechnik. I have a Symbol 2D scanner which uses two very bright LEDs from that company, one red and one red-orange. The red-orange is behind a lens which focuses it into an extremely narrow beam.
1
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@RicoElectrico
23 hours ago
PFG is Pulse Flush Gate according to the datasheet.
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@dcallan812
23 hours ago
Very interesting. 2x
Reply
@littleboot_
1 day ago
Cool interesting device
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@dav1dbone
1 day ago
I've stripped large projectors, looks similar, wonder if some of those castings are a magnesium alloy?
Reply
@kevywevvy8833
1 day ago
ironic that some of those Phlatlight modules are used in some of the cheapest disco lights.
1
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1 reply
@bill6255
1 day ago
Great vid - gets right into subject in title, its packed with information, wraps up quickly. Should get a YT award! imho
3
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@JAKOB1977
1 day ago (edited)
The whole sensor module incl. a 5 grand 50mpix sensor for 49 £.. highest bid atm
Though also a limited CCD sensor, but for the right buyer its a steal at these relative low sums.
Architecture Full Frame CCD (Square Pixels)
Total Number of Pixels 8304 (H) × 6220 (V) = 51.6 Mp
Number of Effective Pixels 8208 (H) × 6164 (V) = 50.5 Mp
Number of Active Pixels 8176 (H) × 6132 (V) = 50.1 Mp
Pixel Size 6.0 m (H) × 6.0 m (V)
Active Image Size 49.1 mm (H) × 36.8 mm (V)
61.3 mm (Diagonal),
645 1.1x Optical Format
Aspect Ratio 4:3
Horizontal Outputs 4
Saturation Signal 40.3 ke−
Output Sensitivity 31 V/e−
Quantum Efficiency
KAF−50100−CAA
KAF−50100−AAA
KAF−50100−ABA (with Lens)
22%, 22%, 16% (Peak R, G, B)
25%
62%
Read Noise (f = 18 MHz) 12.5 e−
Dark Signal (T = 60°C) 42 pA/cm2
Dark Current Doubling Temperature 5.7°C
Dynamic Range (f = 18 MHz) 70.2 dB
Estimated Linear Dynamic Range
(f = 18 MHz)
69.3 dB
Charge Transfer Efficiency
Horizontal
Vertical
0.999995
0.999999
Blooming Protection
(4 ms Exposure Time)
800X Saturation Exposure
Maximum Date Rate 18 MHz
Package Ceramic PGA
Cover Glass MAR Coated, 2 Sides or
Clear Glass
Features
• TRUESENSE Transparent Gate Electrode
for High Sensitivity
• Ultra-High Resolution
• Board Dynamic Range
• Low Noise Architecture
• Large Active Imaging Area
Applications
• Digitization
• Mapping/Aerial
• Photography
• Scientific
Thx for the tear down Mike, always a joy
Reply
@martinalooksatthings
1 day ago
15:49 that is some great bodging on of caps, they really didn't want to respin that PCB huh
8
Reply
@RhythmGamer
1 day ago
Was depressed today and then a new mike video dropped and now I’m genuinely happy to get my tear down fix
1
Reply
@dine9093
1 day ago (edited)
Did you transfrom into Mr Blobby for a moment there?
2
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@NickNorton
1 day ago
Thanks Mike. Your videos are always interesting.
5
Reply
@KeritechElectronics
1 day ago
Heavy optics indeed... Spare no expense, cost no object. Splendid build quality. The CCD is a thing of beauty!
1
Reply
@YSoreil
1 day ago
The pricing on that sensor is about right, I looked in to these many years ago when they were still in production since it's the only large sensor you could actually buy. Really cool to see one in the wild.
2
Reply
@snik2pl
1 day ago
That leds look like from led projector
Reply
@vincei4252
1 day ago
TDI = Time Domain Integration ?
1
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@wolpumba4099
1 day ago (edited)
Maybe the camera should not be illuminated during readout.
From the datasheet of the sensor (Onsemi): saturation 40300 electrons, read noise 12.5 electrons per pixel @ 18MHz (quite bad). quantum efficiency 62% (if it has micro lenses), frame rate 1 Hz. lateral overflow drain to prevent blooming protects against 800x (factor increases linearly with exposure time) saturation exposure (32e6 electrons per pixel at 4ms exposure time), microlens has +/- 20 degree acceptance angle
i guess it would be good for astrophotography
4
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@txm100
1 day ago (edited)
Babe wake up a new mikeselectricstuff has dropped!
9
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@vincei4252
1 day ago
That looks like a finger-lakes filter wheel, however, for astronomy they'd never use such a large stepper.
1
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@MRooodddvvv
1 day ago
yaaaaay ! more overcomplicated optical stuff !
4
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1 reply
@NoPegs
1 day ago
He lives!
11
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1 reply
Transcript
0:00
so I've stripped all the bits of the
0:01
optical system so basically we've got
0:03
the uh the camera
0:05
itself which is mounted on this uh very
0:09
complex
0:10
adjustment thing which obviously to set
0:13
you the various tilt and uh alignment
0:15
stuff then there's two of these massive
0:18
lenses I've taken one of these apart I
0:20
think there's something like about eight
0:22
or nine Optical elements in here these
0:25
don't seem to do a great deal in terms
0:26
of electr magnification they're obiously
0:28
just about getting the image to where it
0:29
uh where it needs to be just so that
0:33
goes like that then this Optical block I
0:36
originally thought this was made of some
0:37
s crazy heavy material but it's just
0:39
really the sum of all these Optical bits
0:41
are just ridiculously heavy those lenses
0:43
are about 4 kilos each and then there's
0:45
this very heavy very solid um piece that
0:47
goes in the middle and this is so this
0:49
is the filter wheel assembly with a
0:51
hilariously oversized steper
0:53
motor driving this wheel with these very
0:57
large narrow band filters so we've got
1:00
various different shades of uh
1:03
filters there five Al together that
1:06
one's actually just showing up a silver
1:07
that's actually a a red but fairly low
1:10
transmission orangey red blue green
1:15
there's an excess cover on this side so
1:16
the filters can be accessed and changed
1:19
without taking anything else apart even
1:21
this is like ridiculous it's like solid
1:23
aluminium this is just basically a cover
1:25
the actual wavelengths of these are um
1:27
488 525 570 630 and 700 NM not sure what
1:32
the suffix on that perhaps that's the uh
1:34
the width of the spectral line say these
1:37
are very narrow band filters most of
1:39
them are you very little light through
1:41
so it's still very tight narrow band to
1:43
match the um fluoresence of the dies
1:45
they're using in the biochemical process
1:48
and obviously to reject the light that's
1:49
being fired at it from that Illuminator
1:51
box and then there's a there's a second
1:53
one of these lenses then the actual sort
1:55
of samples below that so uh very serious
1:58
amount of very uh chunky heavy Optics
2:01
okay let's take a look at this light
2:02
source made by company Lumen Dynamics
2:04
who are now part of
2:06
excelitas self-contained unit power
2:08
connector USB and this which one of the
2:11
Cable Bundle said was a TTL interface
2:14
USB wasn't used in uh the fluid
2:17
application output here and I think this
2:19
is an input for um light feedback I
2:21
don't if it's regulated or just a measur
2:23
measurement facility and the uh fiber
2:27
assembly
2:29
Square Inlet there and then there's two
2:32
outputs which have uh lens assemblies
2:35
and this small one which goes back into
2:37
that small Port just Loops out of here
2:40
straight back in So on this side we've
2:42
got the electronics which look pretty
2:44
straightforward we've got a bit of power
2:45
supply stuff over here and we've got
2:48
separate drivers for each wavelength now
2:50
interesting this is clearly been very
2:52
specifically made for this application
2:54
you I was half expecting like say some
2:56
generic drivers that could be used for a
2:58
number of different things but actually
3:00
literally specified the exact wavelength
3:02
on the PCB there is provision here for
3:04
385 NM which isn't populated but this is
3:07
clearly been designed very specifically
3:09
so these four drivers look the same but
3:10
then there's two higher power ones for
3:12
575 and
3:14
520 a slightly bigger heat sink on this
3:16
575 section there a p 24 which is
3:20
providing USB interface USB isolator the
3:23
USB interface just presents as a comport
3:26
I did have a quick look but I didn't
3:27
actually get anything sensible um I did
3:29
dump the Pi code out and there's a few
3:31
you a few sort of commands that you
3:32
could see in text but I didn't actually
3:34
manage to get it working properly I
3:36
found some software for related version
3:38
but it didn't seem to want to talk to it
3:39
but um I say that wasn't used for the
3:41
original application it might be quite
3:42
interesting to get try and get the Run
3:44
hours count out of it and the TTL
3:46
interface looks fairly straightforward
3:48
we've got positions for six opto
3:50
isolators but only five five are
3:52
installed so that corresponds with the
3:54
unused thing so I think this hopefully
3:56
should be as simple as just providing a
3:57
ttrl signal for each color to uh enable
4:00
it a big heat sink here which is there I
4:03
think there's like a big S of metal
4:04
plate through the middle of this that
4:05
all the leads are mounted on the other
4:07
side so this is heat sinking it with a
4:09
air flow from a uh just a fan in here
4:13
obviously don't have the air flow
4:14
anywhere near the Optics so conduction
4:17
cool through to this plate that's then
4:18
uh air cooled got some pots which are
4:21
presumably power
4:22
adjustments okay let's take a look at
4:24
the other side which is uh much more
4:27
interesting see we've got some uh very
4:31
uh neatly Twisted cable assemblies there
4:35
a bunch of leads so we've got one here
4:37
475 up here 430 NM 630 575 and 520
4:44
filters and dcro mirrors a quick way to
4:48
see what's white is if we just shine
4:49
some white light through
4:51
here not sure how it is is to see on the
4:54
camera but shining white light we do
4:55
actually get a bit of red a bit of blue
4:57
some yellow here so the obstacle path
5:00
575 it goes sort of here bounces off
5:03
this mirror and goes out the 520 goes
5:07
sort of down here across here and up
5:09
there 630 goes basically straight
5:13
through
5:15
430 goes across there down there along
5:17
there and the 475 goes down here and
5:20
left this is the light sensing thing
5:22
think here there's just a um I think
5:24
there a photo diode or other sensor
5:26
haven't actually taken that off and
5:28
everything's fixed down to this chunk of
5:31
aluminium which acts as the heat
5:32
spreader that then conducts the heat to
5:33
the back side for the heat
5:35
sink and the actual lead packages all
5:38
look fairly similar except for this one
5:41
on the 575 which looks quite a bit more
5:44
substantial big spay
5:46
Terminals and the interface for this
5:48
turned out to be extremely simple it's
5:50
literally a 5V TTL level to enable each
5:54
color doesn't seem to be any tensity
5:56
control but there are some additional
5:58
pins on that connector that weren't used
5:59
in the through time thing so maybe
6:01
there's some extra lines that control
6:02
that I couldn't find any data on this uh
6:05
unit and the um their current product
6:07
range is quite significantly different
6:09
so we've got the uh blue these
6:13
might may well be saturating the camera
6:16
so they might look a bit weird so that's
6:17
the 430
6:18
blue the 575
6:24
yellow uh
6:26
475 light blue
6:29
the uh 520
6:31
green and the uh 630 red now one
6:36
interesting thing I noticed for the
6:39
575 it's actually it's actually using a
6:42
white lead and then filtering it rather
6:44
than using all the other ones are using
6:46
leads which are the fundamental colors
6:47
but uh this is actually doing white and
6:50
it's a combination of this filter and
6:52
the dichroic mirrors that are turning to
6:55
Yellow if we take the filter out and a
6:57
lot of the a lot of the um blue content
7:00
is going this way the red is going
7:02
straight through these two mirrors so
7:05
this is clearly not reflecting much of
7:08
that so we end up with the yellow coming
7:10
out of uh out of there which is a fairly
7:14
light yellow color which you don't
7:16
really see from high intensity leads so
7:19
that's clearly why they've used the
7:20
white to uh do this power consumption of
7:23
the white is pretty high so going up to
7:25
about 2 and 1 half amps on that color
7:27
whereas most of the other colors are
7:28
only drawing half an amp or so at 24
7:30
volts the uh the green is up to about
7:32
1.2 but say this thing is uh much
7:35
brighter and if you actually run all the
7:38
colors at the same time you get a fairly
7:41
reasonable um looking white coming out
7:43
of it and one thing you might just be
7:45
out to notice is there is some sort
7:46
color banding around here that's not
7:49
getting uh everything s completely
7:51
concentric and I think that's where this
7:53
fiber optic thing comes
7:58
in I'll
8:00
get a couple of Fairly accurately shaped
8:04
very sort of uniform color and looking
8:06
at What's um inside here we've basically
8:09
just got this Square Rod so this is
8:12
clearly yeah the lights just bouncing
8:13
off all the all the various sides to um
8:16
get a nice uniform illumination uh this
8:19
back bit looks like it's all potted so
8:21
nothing I really do to get in there I
8:24
think this is fiber so I have come
8:26
across um cables like this which are
8:27
liquid fill but just looking through the
8:30
end of this it's probably a bit hard to
8:31
see it does look like there fiber ends
8:34
going going on there and so there's this
8:36
feedback thing which is just obviously
8:39
compensating for the any light losses
8:41
through here to get an accurate
8:43
representation of uh the light that's
8:45
been launched out of these two
8:47
fibers and you see uh
8:49
these have got this sort of trapezium
8:54
shape light guides again it's like a
8:56
sort of acrylic or glass light guide
9:00
guess projected just to make the right
9:03
rectangular
9:04
shape and look at this Center assembly
9:07
um the light output doesn't uh change
9:10
whether you feed this in or not so it's
9:11
clear not doing any internal Clos Loop
9:14
control obviously there may well be some
9:16
facility for it to do that but it's not
9:17
being used in this
9:19
application and so this output just
9:21
produces a voltage on the uh outle
9:24
connector proportional to the amount of
9:26
light that's present so there's a little
9:28
diffuser in the back there
9:30
and then there's just some kind of uh
9:33
Optical sensor looks like a
9:35
chip looking at the lead it's a very
9:37
small package on the PCB with this lens
9:40
assembly over the top and these look
9:43
like they're actually on a copper
9:44
Metalized PCB for maximum thermal
9:47
performance and yeah it's a very small
9:49
package looks like it's a ceramic
9:51
package and there's a thermister there
9:53
for temperature monitoring this is the
9:56
475 blue one this is the 520 need to
9:59
Green which is uh rather different OB
10:02
it's a much bigger D with lots of bond
10:04
wise but also this looks like it's using
10:05
a phosphor if I shine a blue light at it
10:08
lights up green so this is actually a
10:10
phosphor conversion green lead which
10:12
I've I've come across before they want
10:15
that specific wavelength so they may be
10:17
easier to tune a phosphor than tune the
10:20
um semiconductor material to get the uh
10:23
right right wavelength from the lead
10:24
directly uh red 630 similar size to the
10:28
blue one or does seem to have a uh a
10:31
lens on top of it there is a sort of red
10:33
coloring to
10:35
the die but that doesn't appear to be
10:38
fluorescent as far as I can
10:39
tell and the white one again a little
10:41
bit different sort of much higher
10:43
current
10:46
connectors a makeer name on that
10:48
connector flot light not sure if that's
10:52
the connector or the lead
10:54
itself and obviously with the phosphor
10:56
and I'd imagine that phosphor may well
10:58
be tuned to get the maximum to the uh 5
11:01
cenm and actually this white one looks
11:04
like a St fairly standard product I just
11:06
found it in Mouse made by luminous
11:09
devices in fact actually I think all
11:11
these are based on various luminous
11:13
devices modules and they're you take
11:17
looks like they taking the nearest
11:18
wavelength and then just using these
11:19
filters to clean it up to get a precise
11:22
uh spectral line out of it so quite a
11:25
nice neat and um extreme
11:30
bright light source uh sure I've got any
11:33
particular use for it so I think this
11:35
might end up on
11:36
eBay but uh very pretty to look out and
11:40
without the uh risk of burning your eyes
11:43
out like you do with lasers so I thought
11:45
it would be interesting to try and
11:46
figure out the runtime of this things
11:48
like this we usually keep some sort
11:49
record of runtime cuz leads degrade over
11:51
time I couldn't get any software to work
11:52
through the USB face but then had a
11:54
thought probably going to be writing the
11:55
runtime periodically to the e s prom so
11:58
I just just scope up that and noticed it
12:00
was doing right every 5 minutes so I
12:02
just ran it for a while periodically
12:04
reading the E squ I just held the pick
12:05
in in reset and um put clip over to read
12:07
the square prom and found it was writing
12:10
one location per color every 5 minutes
12:12
so if one color was on it would write
12:14
that location every 5 minutes and just
12:16
increment it by one so after doing a few
12:18
tests with different colors of different
12:19
time periods it looked extremely
12:21
straightforward it's like a four bite
12:22
count for each color looking at the
12:24
original data that was in it all the
12:26
colors apart from Green were reading
12:28
zero and the green was reading four
12:30
indicating a total 20 minutes run time
12:32
ever if it was turned on run for a short
12:34
time then turned off that might not have
12:36
been counted but even so indicates this
12:37
thing wasn't used a great deal the whole
12:40
s process of doing a run can be several
12:42
hours but it'll only be doing probably
12:43
the Imaging at the end of that so you
12:46
wouldn't expect to be running for a long
12:47
time but say a single color for 20
12:50
minutes over its whole lifetime does
12:52
seem a little bit on the low side okay
12:55
let's look at the camera un fortunately
12:57
I managed to not record any sound when I
12:58
did this it's also a couple of months
13:00
ago so there's going to be a few details
13:02
that I've forgotten so I'm just going to
13:04
dub this over the original footage so um
13:07
take the lid off see this massive great
13:10
heat sink so this is a pel cool camera
13:12
we've got this blower fan producing a
13:14
fair amount of air flow through
13:16
it the connector here there's the ccds
13:19
mounted on the board on the
13:24
right this unplugs so we've got a bit of
13:27
power supply stuff on here
13:29
USB interface I think that's the Cyprus
13:32
microcontroller High speeded USB
13:34
interface there's a zyink spon fpga some
13:40
RAM and there's a couple of ATD
13:42
converters can't quite read what those
13:45
those are but anal
13:47
devices um little bit of bodgery around
13:51
here extra decoupling obviously they
13:53
have having some noise issues this is
13:55
around the ram chip quite a lot of extra
13:57
capacitors been added there
13:59
uh there's a couple of amplifiers prior
14:01
to the HD converter buffers or Andor
14:05
amplifiers taking the CCD
14:08
signal um bit more power spy stuff here
14:11
this is probably all to do with
14:12
generating the various CCD bias voltages
14:14
they uh need quite a lot of exotic
14:18
voltages next board down is just a
14:20
shield and an interconnect
14:24
boardly shielding the power supply stuff
14:26
from some the more sensitive an log
14:28
stuff
14:31
and this is the bottom board which is
14:32
just all power supply
14:34
stuff as you can see tons of capacitors
14:37
or Transformer in
14:42
there and this is the CCD which is a uh
14:47
very impressive thing this is a kf50 100
14:50
originally by true sense then codec
14:53
there ON
14:54
Semiconductor it's 50 megapixels uh the
14:58
only price I could find was this one
15:00
5,000 bucks and the architecture you can
15:03
see there actually two separate halves
15:04
which explains the Dual AZ converters
15:06
and two amplifiers it's literally split
15:08
down the middle and duplicated so it's
15:10
outputting two streams in parallel just
15:13
to keep the bandwidth sensible and it's
15:15
got this amazing um diffraction effects
15:18
it's got micro lenses over the pixel so
15:20
there's there's a bit more Optics going
15:22
on than on a normal
15:25
sensor few more bodges on the CCD board
15:28
including this wire which isn't really
15:29
tacked down very well which is a bit uh
15:32
bit of a mess quite a few bits around
15:34
this board where they've uh tacked
15:36
various bits on which is not super
15:38
impressive looks like CCD drivers on the
15:40
left with those 3 ohm um damping
15:43
resistors on the
15:47
output get a few more little bodges
15:50
around here some of
15:52
the and there's this separator the
15:54
silica gel to keep the moisture down but
15:56
there's this separator that actually
15:58
appears to be cut from piece of
15:59
antistatic
16:04
bag and this sort of thermal block on
16:06
top of this stack of three pel Cola
16:12
modules so as with any Stacks they get
16:16
um larger as they go back towards the
16:18
heat sink because each P's got to not
16:20
only take the heat from the previous but
16:21
also the waste heat which is quite
16:27
significant you see a little temperature
16:29
sensor here that copper block which
16:32
makes contact with the back of the
16:37
CCD and this's the back of the
16:40
pelas this then contacts the heat sink
16:44
on the uh rear there a few thermal pads
16:46
as well for some of the other power
16:47
components on this
16:51
PCB okay I've connected this uh camera
16:54
up I found some drivers on the disc that
16:56
seem to work under Windows 7 couldn't
16:58
get to install under Windows 11 though
17:01
um in the absence of any sort of lens or
17:03
being bothered to the proper amount I've
17:04
just put some f over it and put a little
17:06
pin in there to make a pinhole lens and
17:08
software gives a few options I'm not
17:11
entirely sure what all these are there's
17:12
obviously a clock frequency 22 MHz low
17:15
gain and with PFG no idea what that is
17:19
something something game programmable
17:20
Something game perhaps ver exposure
17:23
types I think focus is just like a
17:25
continuous grab until you tell it to
17:27
stop not entirely sure all these options
17:30
are obviously exposure time uh triggers
17:33
there ex external hardware trigger inut
17:35
you just trigger using a um thing on
17:37
screen so the resolution is 8176 by
17:40
6132 and you can actually bin those
17:42
where you combine multiple pixels to get
17:46
increased gain at the expense of lower
17:48
resolution down this is a 10sec exposure
17:51
obviously of the pin hole it's very uh
17:53
intensitive so we just stand still now
17:56
downloading it there's the uh exposure
17:59
so when it's
18:01
um there's a little status thing down
18:03
here so that tells you the um exposure
18:07
[Applause]
18:09
time it's this is just it
18:15
downloading um it is quite I'm seeing
18:18
quite a lot like smearing I think that I
18:20
don't know whether that's just due to
18:21
pixels overloading or something else I
18:24
mean yeah it's not it's not um out of
18:26
the question that there's something not
18:27
totally right about this camera
18:28
certainly was bodge wise on there um I
18:31
don't I'd imagine a camera like this
18:32
it's got a fairly narrow range of
18:34
intensities that it's happy with I'm not
18:36
going to spend a great deal of time on
18:38
this if you're interested in this camera
18:40
maybe for astronomy or something and
18:42
happy to sort of take the risk of it may
18:44
not be uh perfect I'll um I think I'll
18:47
stick this on eBay along with the
18:48
Illuminator I'll put a link down in the
18:50
description to the listing take your
18:52
chances to grab a bargain so for example
18:54
here we see this vertical streaking so
18:56
I'm not sure how normal that is this is
18:58
on fairly bright scene looking out the
19:02
window if I cut the exposure time down
19:04
on that it's now 1 second
19:07
exposure again most of the image
19:09
disappears again this is looks like it's
19:11
possibly over still overloading here go
19:14
that go down to say say quarter a
19:16
second so again I think there might be
19:19
some Auto gain control going on here um
19:21
this is with the PFG option let's try
19:23
turning that off and see what
19:25
happens so I'm not sure this is actually
19:27
more streaking or which just it's
19:29
cranked up the gain all the dis display
19:31
gray scale to show what um you know the
19:33
range of things that it's captured
19:36
there's one of one of 12 things in the
19:38
software there's um you can see of you
19:40
can't seem to read out the temperature
19:42
of the pelta cooler but you can set the
19:44
temperature and if you said it's a
19:46
different temperature you see the power
19:48
consumption jump up running the cooler
19:50
to get the temperature you requested but
19:52
I can't see anything anywhere that tells
19:54
you whether the cool is at the at the
19:56
temperature other than the power
19:57
consumption going down and there's no
19:59
temperature read out
20:03
here and just some yeah this is just
20:05
sort of very basic software I'm sure
20:07
there's like an API for more
20:09
sophisticated
20:10
applications but so if you know anything
20:12
more about these cameras please um stick
20:14
in the
20:15
comments um incidentally when I was
20:18
editing I didn't notice there was a bent
20:19
pin on the um CCD but I did fix that
20:22
before doing these tests and also
20:24
reactivated the um silica gel desicant
20:26
cuz I noticed it was uh I was getting
20:28
bit of condensation on the window but um
20:31
yeah so a couple of uh interesting but
20:34
maybe not particularly uh useful pieces
20:37
of Kit except for someone that's got a
20:38
very specific use so um I'll stick a
20:42
I'll stick these on eBay put a link in
20:44
the description and say hopefully
20:45
someone could actually make some uh good
20:47
use of these things
Example Output:
**Abstract:**
This video presents Part 2 of a teardown focusing on the optical components of a Fluidigm Polaris biotechnology instrument, specifically the multi-wavelength illuminator and the high-resolution CCD camera.
The Lumen Dynamics illuminator unit is examined in detail, revealing its construction using multiple high-power LEDs (430nm, 475nm, 520nm, 575nm, 630nm) combined via dichroic mirrors and filters. A square fiber optic rod is used to homogenize the light. A notable finding is the use of a phosphor-converted white LED filtered to achieve the 575nm output. The unit features simple TTL activation for each color, conduction cooling, and internal homogenization optics. Analysis of its EEPROM suggests extremely low operational runtime.
The camera module teardown showcases a 50 Megapixel ON Semiconductor KAF-50100 CCD sensor with micro-lenses, cooled by a multi-stage Peltier stack. The control electronics include an FPGA and a USB interface. Significant post-manufacturing modifications ("bodges") are observed on the camera's circuit boards. Basic functional testing using vendor software and a pinhole lens confirms image capture but reveals prominent vertical streaking artifacts, the cause of which remains uncertain (potential overload, readout artifact, or fault).
**Exploring the Fluidigm Polaris: A Detailed Look at its High-End Optics and Camera System**
* **0:00 High-End Optics:** The system utilizes heavy, high-quality lenses and mirrors for precise imaging, weighing around 4 kilos each.
* **0:49 Narrow Band Filters:** A filter wheel with five narrow band filters (488, 525, 570, 630, and 700 nm) ensures accurate fluorescence detection and rejection of excitation light.
* **2:01 Customizable Illumination:** The Lumen Dynamics light source offers five individually controllable LED wavelengths (430, 475, 520, 575, 630 nm) with varying power outputs. The 575nm yellow LED is uniquely achieved using a white LED with filtering.
* **3:45 TTL Control:** The light source is controlled via a simple TTL interface, enabling easy on/off switching for each LED color.
* **12:55 Sophisticated Camera:** The system includes a 50-megapixel Kodak KAI-50100 CCD camera with a Peltier cooling system for reduced noise.
* **14:54 High-Speed Data Transfer:** The camera features dual analog-to-digital converters to manage the high data throughput of the 50-megapixel sensor, which is effectively two 25-megapixel sensors operating in parallel.
* **18:11 Possible Issues:** The video creator noted some potential issues with the camera, including image smearing.
* **18:11 Limited Dynamic Range:** The camera's sensor has a limited dynamic range, making it potentially challenging to capture scenes with a wide range of brightness levels.
* **11:45 Low Runtime:** Internal data suggests the system has seen minimal usage, with only 20 minutes of recorded runtime for the green LED.
* **20:38 Availability on eBay:** Both the illuminator and camera are expected to be listed for sale on eBay.
Here is the real transcript. What would be a good group of people to review this topic? Please summarize provide a summary like they would:
My favourite vowel: Oh NAUR explained!
Dr Geoff Lindsey
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Thanks so much to anyone who feels able to support my channel 🙏🙏🙏 / drgeofflindsey Patrons get access to my videos ad free!
--
A story about koalas, mermaids and goats.
0:00 Introduction and quiz
0:44 Analysing 'going'
3:30 The GenAus GOAT vowel
6:05 New developments
11:51 Comparison with 'intrusive' r
12:57 Interaction with hard attack
14:27 Explanation in 3D
Chat with other speech/language fans on my Discord: / discord
/ muchelleb
/ aussieenglish
/ @peachiespeechie
/ elliotrobertsvideos
/ maddy_macrae_
University of Glasgow Seeing Speech https://seeingspeech.arts.gla.ac.uk/i...
Praat speech analysis app https://www.fon.hum.uva.nl/praat/
If you want to speak British English clearly and confidently, I recommend this course from accent coach Luke Nicholson:
info: https://improveyouraccent.co.uk/engli...
sign up: https://course.improveyouraccent.co.u...
This video playfully explores the fascinating "GOAT vowel" in Australian English. The analysis uses audio examples and visualisations, including MRI and ultrasound images, to compare pronunciations across accents. A 3D explanation clarifies the unique evolution of this vowel in younger speakers.
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Dr Geoff Lindsey
327K subscribers
Videos
About
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33:46
Why these English phonetic symbols are all WRONG
by Dr Geoff Lindsey
6:10
A century of "intrusive" R in English
by Dr Geoff Lindsey
12:54
Hard Attack: How English is getting more "choppy"
by Dr Geoff Lindsey
20:07
The Vowel Space
by Dr Geoff Lindsey
3,631 Comments
Add a comment...
@MIRobin22
2 years ago
I have to say, "This is what the new Australian goat is gliding towards" is an incredible sentence, with or without context
6.2K
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·
39 replies
@jugbrewer
2 years ago
if i told my partner "i love the the australian r-coloured goat vowel," they would probably think i was having some kind of fever-induced episode
1.5K
Reply
14 replies
@das_it_mane
2 years ago
This guy is passionate about stuff I didn't even know existed
429
Reply
3 replies
@ffarquhar_blt
2 years ago
I'm gonna be honest, as an Australian I've been so confused what the hell all of these Americans were getting at identifying some phantom R. I pronounce my goat glide in the same way as you described initially, and have never heard an 'r' out in the wild for the same sound.
But then you showed me that those very clear rhotasised sounds from the start of the video were the same o's I'd heard and gone "see, no r's!" initially. Insane. You made me hear it!
And I hate you for it :) <3
1.7K
Reply
47 replies
@MizaBrega
2 years ago (edited)
As a young Australian, I've been confused about where all the aur naur had been coming from, so this is somewhat enlightening. I'd never heard it in my own accent, the rhoticised goat, or most people around me - in my immediate family or community - but got a sense of it in some voices of people from other parts of Australia including extended family that live in another state, leading me to believe it's probably regional. In listening a little more to my own voice now though, I think I do approach it more than I expected, but not to the same degree as most examples in the video.
1.2K
Reply
64 replies
@zoboe92
2 years ago
The more you naur.
270
Reply
2 replies
@thedofflin
2 years ago
As an Australian, this sounds specifically like a Northern Beaches accent, and more specifically women from there. I'd say it plays a similar role to the 'valley girl' accent.
1.8K
Reply
83 replies
@Pingwn
2 years ago
I love that this channel is the definition of descriptivism, you always analyse how people are actually talking and you never make a judgement on the different pronunciations but just describe it objectively.
2.2K
Reply
60 replies
@timwds
10 months ago
As an Australian, I've always been confused why Americans meme on our "no" having an "R" sound like a pirate. To me it sounds more like a "W". This was super helpful in demonstrating where they're coming from.
21
Reply
@nerdycus6935
2 years ago
That '...pushing the vowel's glide trajectory further down under.' is worth hitting subscribe.
81
Reply
@LorraineVirginie
2 years ago
The fact he can so smoothly pronounce all those words in the English, Australian, and American accents, and not even in a sentence, is absolutely incredible to me.
1.6K
Reply
21 replies
@chris86simon
2 years ago
Obviusly the title made the quiz at the start easy, but the word "blur" was the one that made it clear to me at least.
19
Reply
@biosparkles9442
2 years ago
I'm Australian and I didn't really understand the naur meme until this video. Until you broke it down I really couldn't hear the r sound slipping in at the end of our goat vowels, but you made it so clear
383
Reply
15 replies
@Aboogidyboogidy
2 years ago
This is amazing. I'm Australian and was completely hoodwinked into thinking it was a US southerner, but once you told me that the written words were a lie I could understand each of them as the Aussie pronunciation
954
Reply
30 replies
@hclyrics
1 year ago
The M Night Shyamalan level twist at 8:09 blew me away.
9
Reply
@Kyropinesis
2 years ago
australians when something crazy happens: 🇳🇴
6.1K
Reply
92 replies
@ethanyalejaffe5234
2 years ago
The "nurse" clued me in initially that something was weird. As a speaker of North American English, the first few words sounded very north American to me, but the nurse almost sounded like "narse," which did remind me of Australian.
337
Reply
8 replies
@Sourcoolness
2 years ago
The interesting thing is that this sound has actually existed in eastern Australian accents for a long time, it was just much more subtle, which is why Pru and Trude have been speaking that way since the mid nineties - they're an exaggeration of a real accent that existed at the time. Now, that version of the accent is much more posh, but the goat vowel is there.
315
Reply
12 replies
@toolittletoolate3917
2 years ago
I still recall the day that I first heard an Ozzie say “Oh, no”. I strove for days to reproduce her pronunciation (in the privacy of my own home) and eventually got pretty close, but my American mouth just didn’t want to twist itself into a knot.
267
Reply
15 replies
@badnrad
1 year ago
He meant to say “but that’s for another videour” at the end
6
Reply
In this video
Timeline
Chapters
Transcript
Introduction and quiz
0:01
Before I start this video, a little quiz.
0:04
All I want you to do is to guess where this English speaker is from.
0:25
I'll give the answer later, but first let's get to grips with one of my absolute favourite vowels,
0:31
in English at least. Of course I don't like it because it's good or bad,
0:36
but because it's fascinating. That said, it does have a fairly boring aspect.
Analysing 'going'
0:45
Now take a listen to this speaker
0:46
going
0:50
For this word, I think this would be a reasonable transcription. Let’s hear the word in context.
0:56
you're gonna start visualizing yourself going to those places
0:59
going into a five years dream list going to that weird workout class
1:04
I was like visualizing myself going to all these places
1:07
As I’m sure many of you can tell, this speaker is Australian. And Australia's
1:12
best known dictionary, the Macquarie, uses this transcription for the word in question.
1:18
That’s certainly less accurate than mine.
1:21
This symbol would be phonetically correct for this vowel in Scotland. ‘Where did they
1:26
go?’ Our Australian speaker begins the diphthong with a far more open quality.
1:36
And we see her lips starting to round there for the glide portion of the diphthong. Now
1:42
there's no good reason, in Australian or any other accent of English, to transcribe this
1:47
kind of glide with the symbol for the checked vowel ʊ, as in Australian ‘good’ and ‘book’.
1:53
Unfortunately most dictionaries do this, but it completely violates the
1:57
generalisation that English doesn’t end words in ʊ or any of the other checked
2:03
vowels. That’s why they’re called checked: they have to be followed
2:06
by a consonant. We have words like 'good' and 'book' but no words like gʊ and bʊ.
2:12
The International Phonetic Alphabet has a perfectly good glide symbol which linguists
2:18
have been using for diphthongs like this since before the IPA, and we use it in the
2:24
dictionary I co-edit, CUBE. I cover all this in my video on ‘Why these symbols are all wrong’.
2:31
Using the glide symbol for this diphthong glide also makes it easy to see how the word ‘koala’,
2:37
which Macquarie transcribes like this, transformed so easily,
2:41
through the weakening of the first syllable, into the more common Australian pronunciation kəˈwaːlə.
2:47
This speaker’s pronunciation of ‘going’ isn't all that different from mine,
2:51
or for that matter from the kinds you get in General American. But if you want to
2:56
show the differences of the starting quality in these various accents, you could do it like this.
3:03
Going, knowing, showing.
3:13
So far, so not particularly interesting.
3:17
But notice in all of these words the diphthong we're discussing is followed by another vowel.
3:23
It's when there isn’t a following vowel that things start to get interesting.
The GenAus GOAT vowel
3:32
The diphthong we're discussing, the one in words like go and know and show, is known
3:37
to phonetics people as the GOAT vowel. And when it isn't followed immediately by another vowel,
3:43
Australians pronounce it differently. Specifically, they change the glide part.
3:48
Instead of the tongue body gliding back and up, as it does in the W glide, it glides somewhere else.
3:55
For many Australians, in what we can call the General Australian accent type, the glide is
4:00
not so much up and back as up and forward. At the same time, as in W, the lips become somewhat
4:07
rounded. In other words, it's more like the glide French has at the start of its number 8, huit.
4:13
Here, courtesy of the University of Glasgow, we have an MRI video of a backward glide,
4:19
and an ultrasound video of a forward glide.
4:36
This means that instead of gʌw as in gʌwɪŋ, we get something more like gʌɥ.
4:47
Some people like to transcribe the front glide with a vowel symbol,
4:51
like this, but it's not a vowel, it's a glide.
4:54
And it's perhaps worth pointing out that you can't really show the distinctiveness
4:58
of the Australian type front glide on a tongue quadrilateral, because it ignores the lips,
5:04
so for example aj and aɥ would look the same. To show the difference, you need an
5:10
auditory-acoustic vowel chart, where if two things sound different, they look different.
5:22
A more forward moving GOAT vowel isn't restricted to Australia. You can hear it in New Zealand,
5:28
and I hear it quite commonly in the south of England, where it can sound pretty Australian.
5:33
I really don’t have a desire to
5:37
In fact, across various accents of English,
5:39
we can find speakers fronting either the first element or the glide of the GOAT vowel, or both.
5:46
You was everything that I hoped for you to be.
5:50
So Australia's forward moving glide isn't all that special. The real reason the Aussie GOAT vowel is
5:58
such a favourite of mine is what's happening to it in the speech of many younger speakers.
New developments
6:06
For many younger Australians, the glide in the GOAT diphthong is becoming, or has become,
6:12
rhotacized, or r-coloured. Specifically, the vowel glides into what we can call a bunched r.
6:21
In other words, not so much ʌɥ as ʌɹ.
6:25
Backing up a bit, the characteristic English r sound can be articulated in two main ways. One
6:32
has the tongue body relatively low in the mouth and the tip of the tongue curled up.
6:38
The other has the tongue body bunched up, more like a typical vowel,
6:42
and this, more or less, is what the new Australian GOAT is gliding to, or towards.
6:48
This bunched r goes under various names, bunched r, molar r, domal r, braced r.
6:57
If you go looking on Wikipedia you’ll find phonetic alphabet soup, with the
7:02
bunched r described as a voiced labialized pharyngealized retroflexified velar approximant.
7:09
Anyway, the bunched r is not necessarily velar, it's often more palatal. And it's
7:14
not always pharyngealized, which means produced with throat constriction.
7:19
Many phoneticians can only think in terms of articulation, but it’s always
7:23
worth reminding ourselves that in speech the main thing is not to perform some particular
7:28
articulation but to make the right sound. And these radically different articulations
7:33
are different ways of creating the distinctive rhotacized sound, which I’ll explain later.
7:39
So I’m going to ignore the alphabet soup and just use the symbol recommended on
7:45
the extended IPA chart, namely the normal English upside-down r symbol plus dots for centralization.
7:52
You can also show the lip-rounding if you want, but here for simplicity's sake I won’t bother.
7:58
And now let’s go back to the quiz at the start of the video, where I asked you
8:02
where you thought the speaker was from. I would have answered somewhere in North
8:08
America. But I have a terrible confession to make. I showed you these words, but I never actually
8:14
claimed that these were the words the speaker was saying. In fact, the speaker is the same young
8:20
Australian we were listening to before, and these words all contain her r-coloured GOAT diphthong.
8:27
For example, this isn’t the word ‘star’, it’s the word ‘stone’ with the final ‘n’ cut off.
8:40
And this isn’t the word ‘darn’, it’s the word ‘zone’.
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This isn’t the word ‘blur’, it’s the word ‘below’.
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This isn’t the word ‘crazy’, it’s the word ‘cosy’.
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This isn’t the word ‘nurse’, it’s from ‘know someone’.
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And this isn’t the word ‘cars’, it’s the word ‘coast’.
9:30
Just compare this American speaker, demonstrating the American bunched r,
9:35
with our Australian speaker producing her GOAT vowel.
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This r-colouration has already made a splash in social media. It was actually a meme on Tiktok a couple of years ago, in reaction to an Australian TV series about mermaids called H20,
9:59
where supposedly a common expression was ‘oh no!’
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Of course not all young Australians have gone that far. But we can hear
10:37
the rhotacized GOAT to one degree or another from a lot of younger Australians.
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This sounds rather like an American ‘guard’.
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But it’s the guy from Aussie English saying ‘go down’.
10:53
Go down to the comments
10:57
And listen to his vowel in ‘know’ here.
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I don’t know...
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If this was an American speaker, I’d think they were saying ‘turtle’.
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But of course it’s an Australian saying ‘total’.
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a 3 part series that runs for a total of 7 hours 48 minutes
11:20
in my last video I discussed my hopes for the Beatles' Get Back
11:23
You can hear there that pharyngealization,
11:26
or throat constriction, that sometimes accompanies bunched r.
11:29
I discussed my hopes for the Beatles' Get Back
11:34
There’s also audible throat constriction in his PRICE diphthong, at least in this clip:
11:39
and quite famously
11:42
So we have this lovely phenomenon of r-colouration where there's no historic trace whatsoever
11:48
of a r consonant. This makes it quite different from the so-called intrusive r
Comparison with 'intrusive' r
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as in law r and order and vanilla r ice, which is also found in Australia as it is in England.
12:03
a good idea/r/ is to really look at your vision
12:08
so draw/r/a little cloud
12:11
That phenomenon arises from words
12:14
without historic r becoming phonetically merged with words that have historic r,
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for example law merging in my accent with lore, spa with spar, and Stella merging with stellar.
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The places where you find these two phenomena are the exact opposite of each other.
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So-called intrusive r only occurs directly before a vowel, law/r/enforcement being
12:40
pronounced the same as lore enforcement. But directly before a vowel is precisely
12:46
where we don’t get the more interesting kinds of Australian GOAT vowel,
12:51
because before a vowel we have the boring old W glide instead, as in ‘going’.
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This of course means there's an interaction with hoad attack, sorry, hard attack.
Interaction with hard attack
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If a speaker goes directly from GOAT to a following vowel,
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we get the boring W glide, ‘go ahead’.
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go ahead and message a bunch of people
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But if the speaker puts hard attack on the following vowel,
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in other words inserts an intervening glottal stop, then we get the more interest variants
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a few years ago I actually wrote down a list of things
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Now for goodness sake don't believe the nonsense of so-called linking w, or linking y for that matter
13:43
which don't exist in Australia, Britain, America or anywhere else, despite what YouTube videos,
13:50
text books and even academic articles might tell you. The W in ‘going’ and ‘go ahead’ is
13:59
the glide that’s in the diphthong, and is not in any way an extra, inserted sound. Nobody ever
14:06
inserts a W between Australian ʌɥ or ʌɹ̈ and a following vowel. That would give you gʌɥwing
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or gʌɹ̈wahead. No Australian has ever said kʌɹ̈wala.
Explanation in 3D
14:28
To end, you might be wondering how this wonderful r-coloured GOAT vowel came to be,
14:33
if there's no historic r consonant. Well, again, you can't explain it with the old
14:38
tongue quadrilateral, which not only ignores the lips but can't even show a bunched tongue
14:44
r. On the other hand, the explanation is quite simple in terms of actual sound.
14:49
As I described in my video about the auditory-acoustic vowel space,
14:54
we usually plot it in two dimensions, corresponding to the two lowest and
14:59
most important resonances of the vocal tract. That suffices to differentiate
15:04
most vowels. For example, a French, German, Chinese type [y] vowel would be about here.
15:10
Now I ended that video by showing how the vowel space can easily be
15:15
made three dimensional by including the third highest vocal tract resonance, F3.
15:21
And this 3-dimensional vowel space will show, for example, how that French type [y] is lower
15:27
than [i] in the F3 dimension. Now remember that the General Australian GOAT vowel has that French
15:34
style glide towards that kind of vowel. And, as I showed right at the end of
15:39
the vowel space video, r-colouration involves lowering that F3 even further
15:45
whether it's produced with a curled tongue or a bunched tongue
15:49
So the progressive or fashionable younger Australians are just pushing the GOAT
15:54
vowel's glide trajectory further down under. They’re taking the
15:58
General Australian GOAT diphthong and making it even more Aussie.
16:02
Australian vowels are fascinating, and there's definitely more to be said about them,
16:07
and how they're often mis-analysed. But that's for another video.