Re: [Sursound] OT: Yorkshire's success in 2012 Olympics

[Dave Malham]

What is even better is we beat the Australians :-) Just wish we could do it in 
Rugby League...


On 09/08/2012 22:51, Gerald Wilson wrote:

Doubtless you'll recall that California's economy (compared with other 
*countries*) ranks high in the world's top ten (5th in 1984; slipped back a few 
places in these hard times...)

It's now well-publicised that Yorkshire, were it a country in its own right, 
would rank around 12th in the Olympics medals table...

So well done Dave Malham, et al.

Gerald WW
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Re: [Sursound] Can anyone explain this ?

[Dave Malham]

It's a while since I caught much of this programme, but the whoosh, I guess, might at least partly 
be created with a notch filter. If this is at mid-high frequencies, it's a well known phenomena that 
I first heard demonstrated (on a PDP-8 computer!) way back in the early 1970's when I was at the 
Physics Department, Cardiff - take white noise and notch filtering it at somewhere between 8 and 10 
kHz (from memory, needs checking) results in the perception of a tone moving in the vertical dimension.


 Dave


On 08/08/2012 13:37, Hector Centeno wrote:

I'm a regular watcher and I have noticed exactly the same! I thought it was 
just some reflections from the room but it's interesting to see someone else 
experiencing it.

Hector

On 2012-08-07, at 7:09 AM, Richard Dobson  
wrote:


Re odd things heard: is anyone here a regular watcher of "The Big Bang Theory" show (E4, and on various 
cable channels)?  There is a standard "sting" (a sort of semi-pitched noise cluster cum whoosh sort of 
thing, little more than a second in length) used to transition from one scene to the next.  My stereo TV (full HD 
but otherwise cheap 32" LCD type) is in the corner of my lounge, and is in general not notable at all for 
significant stereo effects, much less anything more "immersive". Obviously, the built-in speakers (a 
generous 2 * 6W) are the typical small tinny things.

However, that sting, fleeting as it is, seems to produce a significant amount 
of pseudo-surround, very much ~not~ localised to the TV, such that every time 
it is really rather surprising. One day I will have to record and analyse it, 
but I haven't got around to that yet. Does anyone have any idea if this is just 
a random emergent feature of the sound (TV or room artifact), or has that 
effect been designed into it in some discernible way?


Richard Dobson
..

sometimes (depending on content), the result will be surprising, but
tricks like these tend to fail on arbitrary content.


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Re: [Sursound] Can anyone explain this ?

[Augustine Leudar]

I struggled to recreate this effect - my last "paper" was on creating
vertical illusions with all these cues etc. The conclusion I reached was
that they can only effectively be created by accident or by nailing a
speaker to a tree.

On 13 August 2012 12:07, Dave Malham  wrote:

> It's a while since I caught much of this programme, but the whoosh, I
> guess, might at least partly be created with a notch filter. If this is at
> mid-high frequencies, it's a well known phenomena that I first heard
> demonstrated (on a PDP-8 computer!) way back in the early 1970's when I was
> at the Physics Department, Cardiff - take white noise and notch filtering
> it at somewhere between 8 and 10 kHz (from memory, needs checking) results
> in the perception of a tone moving in the vertical dimension.
>
>  Dave
>
>
>
> On 08/08/2012 13:37, Hector Centeno wrote:
>
>> I'm a regular watcher and I have noticed exactly the same! I thought it
>> was just some reflections from the room but it's interesting to see someone
>> else experiencing it.
>>
>> Hector
>>
>> On 2012-08-07, at 7:09 AM, Richard Dobson > uk > wrote:
>>
>>  Re odd things heard: is anyone here a regular watcher of "The Big Bang
>>> Theory" show (E4, and on various cable channels)?  There is a standard
>>> "sting" (a sort of semi-pitched noise cluster cum whoosh sort of thing,
>>> little more than a second in length) used to transition from one scene to
>>> the next.  My stereo TV (full HD but otherwise cheap 32" LCD type) is in
>>> the corner of my lounge, and is in general not notable at all for
>>> significant stereo effects, much less anything more "immersive". Obviously,
>>> the built-in speakers (a generous 2 * 6W) are the typical small tinny
>>> things.
>>>
>>> However, that sting, fleeting as it is, seems to produce a significant
>>> amount of pseudo-surround, very much ~not~ localised to the TV, such that
>>> every time it is really rather surprising. One day I will have to record
>>> and analyse it, but I haven't got around to that yet. Does anyone have any
>>> idea if this is just a random emergent feature of the sound (TV or room
>>> artifact), or has that effect been designed into it in some discernible way?
>>>
>>>
>>> Richard Dobson
>>> ..
>>>
>>>> sometimes (depending on content), the result will be surprising, but
>>>> tricks like these tend to fail on arbitrary content.
>>>>
>>>>  __**_
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>>>
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>>
>
> --
>  These are my own views and may or may not be shared by my employer
> /***
> **/
> /* Dave Malham   
> http://music.york.ac.uk/staff/**research/dave-malham/<http://music.york.ac.uk/staff/research/dave-malham/>*/
> /* Music Research Centre */
> /* Department of Music"http://music.york.ac.uk/"; */
> /* The University of York  Phone 01904 322448*/
> /* Heslington  Fax   01904 322450*/
> /* York YO10 5DD */
> /* UK   'Ambisonics - Component Imaging for Audio'   */
> /*    
> "http://www.york.ac.uk/inst/**mustech/3d_audio/<http://www.york.ac.uk/inst/mustech/3d_audio/>"
> */
> /***
> **/
>
>
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Re: [Sursound] OT: Yorkshire's success in 2012 Olympics

[Augustine Leudar]

The democratic republic of Yorkshire (=; hmmm has a certain ring to it.

On 13 August 2012 09:52, Dave Malham  wrote:

> What is even better is we beat the Australians :-) Just wish we could do
> it in Rugby League...
>
>
>
> On 09/08/2012 22:51, Gerald Wilson wrote:
>
>> Doubtless you'll recall that California's economy (compared with other
>> *countries*) ranks high in the world's top ten (5th in 1984; slipped back a
>> few places in these hard times...)
>>
>> It's now well-publicised that Yorkshire, were it a country in its own
>> right, would rank around 12th in the Olympics medals table...
>>
>> So well done Dave Malham, et al.
>>
>> Gerald WW
>> __**_
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>> https://mail.music.vt.edu/**mailman/listinfo/sursound<https://mail.music.vt.edu/mailman/listinfo/sursound>
>>
>
> --
>  These are my own views and may or may not be shared by my employer
> /***
> **/
> /* Dave Malham   
> http://music.york.ac.uk/staff/**research/dave-malham/<http://music.york.ac.uk/staff/research/dave-malham/>*/
> /* Music Research Centre */
> /* Department of Music"http://music.york.ac.uk/"; */
> /* The University of York  Phone 01904 322448*/
> /* Heslington  Fax   01904 322450*/
> /* York YO10 5DD */
> /* UK   'Ambisonics - Component Imaging for Audio'   */
> /*
> "http://www.york.ac.uk/inst/**mustech/3d_audio/<http://www.york.ac.uk/inst/mustech/3d_audio/>"
> */
> /***
> **/
>
>
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Re: [Sursound] OT: Yorkshire's success in 2012 Olympics

[Michael Chapman]

> The democratic republic of Yorkshire (=; hmmm has a certain ring to
> it.
>

Not so sure about 'democratic' (a bit passè in the century of global
empire?) :

Everyone's som'at odd,
Except thee and me,
And I'm not so sure about thee.

[Mis-remembered / misquoted, but ah well ... ]

Michael

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[Sursound] KEMAR parts for the TetraMic

[Eric Carmichel]

Greetings to All:

Several months ago I had suggested making a recording of an Ambisonics 
recording using an Ambisonic mic centered in an array of six or eight 
loudspeakers. I was curious as to whether the second-generation recording would 
retain the original recording’s (perceived) directional cues. This project, as 
well as several of my projects-in-work required that my TetraMic be rotated on 
its center, vertical axis. There are a number of ways to achieve this, to 
include a U-shaped fixture that could be attached to the Audix shock mount 
(used to hold the TetraMic), allow room for the mic’s cable, and then be 
affixed to a turntable.

Just by dumb luck, I found an easy solution to centering the TetraMic in my 
arsenal of spare parts. In turns out that the Brüel & Kjær clamp used to hold 
1/2-inch mics in KEMAR (or similar acoustical test fixtures) fits nicely around 
the base of a TetraMic’s brass handle. The B&K clamp is easily bolted to a 
frame that makes centering and leveling the mic over a turntable or tripod ball 
head simple. The fixture I built also holds the four TetraMic XLR 
adapter/preamps. You can see photos of my handiwork by going to

elcaudio.com/research/page_001.htm

Side note: There is no link to the above photos from the homepage: I’m way 
behind updating both of my sites (= cochlearconcepts and elcaudio).

The test room shown in the photos is a semi-anechoic room with treatment on all 
walls, the floor, and ceiling. My thanks go out to William (Bill) Yost, PhD for 
allowing me to use the room. Briefly, I wanted video and dry voice recordings 
of speech stimuli for an upcoming study. I made video recordings (from two 
angles) of the talkers to complement the speech stimuli.

While I had access to the semi-anechoic room, I made a few recordings using my 
TetraMic so that I could initiate the aforementioned recording-of-a-recording 
project. Instead of using an array of loudspeakers or a “natural” environment 
to create the first-generation recording, I used a single loudspeaker in a 
fixed location and rotated the TetraMic on its vertical axis. The Bilara ball 
head seen in the photos has tick marks that allow accurate rotation in 
15-degree increments. The distance from the loudspeaker to the TetraMic was 2 
m. For each angle, the same sequence of tone bursts was presented and recorded. 
There are a lot of test signals that could have been used, but I chose to use 
1/6-octave pure tones ranging from 50 Hz to 15 kHz. Tones were generated using 
a popular acoustic analysis application (Arta). It was interesting to note that 
I could hear clicks at the ultrasonic frequencies (which for me is anything 
above 14 kHz).

Time-domain analysis of the Arta-generated tones revealed that the 1/6-octave 
sine wave bursts don’t have rise or fall-time envelopes, and that the tones can 
end abruptly anywhere in their cycle. I ended up applying rise and fall times 
so that I could use the tone bursts in future listening experiments. Localizing 
a click is a lot different from localizing a pure tone because the pinna 
transfer function may be more dominant than ILDs or ITDs when localizing 
complex (e.g. click or transient) sounds. The click is probably masked at 
audible frequencies, but the subsonic, transient information could still 
provide a localization clue (could be interesting to find out).

Well, I have a lot of recordings, both audio and video, to sort through. I’ll 
make another post once this is completed. I’ll also make the recordings 
available at a later date.
Best,
Eric
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Re: [Sursound] OT: Yorkshire's success in 2012 Olympics

[David Worrall]

On 13/08/2012, at 6:52 PM, Dave Malham wrote:

> What is even better is we beat the Australians :-) Just wish we could do it 
> in Rugby League...

Many Australians are part Yorkish anyway, so sometimes we have the grace to let 
y'all win on your own soil :-) 
I would have thought Yorkshire would be more chuffed at having stuck it up the 
Londoners...

Of interest to some in this group would be that 2 of the German rowing teams 
(4's and 8's) that won gold so convincingly, trained with sonification.

David
PS Michael. The version of your ditto that I grew up with is
"All is mad in the world but me and thee,
And even thou art a little mad."
> 
> 
> On 09/08/2012 22:51, Gerald Wilson wrote:
>> Doubtless you'll recall that California's economy (compared with other 
>> *countries*) ranks high in the world's top ten (5th in 1984; slipped back a 
>> few places in these hard times...)
>> 
>> It's now well-publicised that Yorkshire, were it a country in its own right, 
>> would rank around 12th in the Olympics medals table...
>> 
>> So well done Dave Malham, et al.
>> 
>> Gerald WW
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> 
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> These are my own views and may or may not be shared by my employer
> /*/
> /* Dave Malham   http://music.york.ac.uk/staff/research/dave-malham/ */
> /* Music Research Centre   */
> /* Department of Music"http://music.york.ac.uk/";   */
> /* The University of York  Phone 01904 322448*/
> /* Heslington  Fax   01904 322450*/
> /* York YO10 5DD */
> /* UK   'Ambisonics - Component Imaging for Audio'   */
> /*"http://www.york.ac.uk/inst/mustech/3d_audio/"; */
> /*/
> 
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_
Dr David Worrall
Experimental Composer, Polymedia
Adjunct Research Fellow, Australian National University
david.worr...@anu.edu.au
Board Member, International Community for Auditory Display
Regional Editor, Organised Sound (CUP) 
IT Projects, Music Council of Australia 
worrall.avatar.com.au   sonification.com.au

T : +61 (0)2 61.61.95.22M: +61 (0)4.02.28.36.90




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Re: [Sursound] OT: Yorkshire's success in 2012 Olympics

[Sampo Syreeni]

On 2012-08-14, David Worrall wrote:

What is even better is we beat the Australians :-) Just wish we could 
do it in Rugby League...


Many Australians are part Yorkish anyway, so sometimes we have the 
grace to let y'all win on your own soil :-)


Yet it's rather obvious you must die horribly. You did partake in the 
Olympics, after all.


Okay, so do we. But I at the very least know a swell way to go.

(I thoroughly hate anything and everything having to do with sports. To 
me an interest in sports negates almost any value a person could earn by 
what I consider proper earnings, like scientific prowess. If somebody 
took an Olympic medal, se'd better have a Nobel, a Fields and an Abel to 
balance it out before I'd consider hir even a fuckbuddy.)

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[Sursound] UHJ and superstereo decodes

[Sampo Syreeni]

It seems that pretty much every site which has offered samples of stereo 
decode of UHJ and/or superstereo has died. As such, could you kind folks 
give me *one* particular, *most* representative piece of something a) 
encoded as some well-defined variant of stereo and passed on as such, b) 
the same decoded for superstereo, c) the same decoded via UHJ, d) the 
same encoded via UHJ and passed on as such, and e) both encoded and 
decoded via UHJ, for two channels only. I'm pretty sure I could carry a 
minute of each as lossless FLAC, till eternity.


(My usual, dismal timeline wrt the Motlerlode applies here as well. But 
I *will* download and save the stuff if somebody gives it to me. Plus, 
now that I took a look at it, if somebody could give me a full set 
comprising of earlier, inferior matrix formats and a full B-format set 
at the same time, I might be able to host a minute or two of them all at 
the same time.


A second set would be appreciated as well, over all of the formats, but 
there I can't guarantee online visibility anymore.)

--
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