Re: [Sursound] Ambisonic hydrophone?

[Marc Lavallée]

umashankar manthravadi  a écrit :
> angelo farina has exactly the beast you are looking for. he had a
> power point presentation describing its use here is the link
> http://www.angelofarina.it/Public/Presentations/UAM2011_Underwater_Ambisonics_files/frame.htmumashankar

Fons Adriaensen  a écrit :
> Most hydrophones (and certainly any low-cost ones) will be 
> omnis, so the A/B processing will be very different from
> what is required for a normal tetra mic using directional
> capsules.

Hydrophones are omnidirectional, and the underwater probe for the
Brahma is tetrahedral... Are omnidirectional "sensors" appropriate to
build tetrahedral ambisonic microphones?

--
Marc
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Re: [Sursound] Ambisonic hydrophone?

[umashankar manthravadi]

angelo farina has exactly the beast you are looking for. he had a power point 
presentation describing its use here is the link 
http://www.angelofarina.it/Public/Presentations/UAM2011_Underwater_Ambisonics_files/frame.htmumashankar

i have published my poems. read (or buy) at http://stores.lulu.com/umashankar
 > From: worr...@avatar.com.au
> Date: Tue, 19 Feb 2013 05:49:37 +1100
> To: sursound@music.vt.edu
> Subject: [Sursound] Ambisonic hydrophone?
> 
> Now you've gotten me into a comms mode ... :-) 
> 
> Does anone know of such a beast?
> (I thought of putting the TetraMic in a plastic bag, but I'm not sure Len 
> would approve :-)
> 
> Or how one might go about building one...
> Failing which, does anyone have a recommendation on a cost-effective 
> single-channel unit?
> 
> 
> David
> _
> 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
> 
> 
> 
> 
> 
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Re: [Sursound] Ambisonic hydrophone?

[Jörn Nettingsmeier]

On 02/18/2013 10:23 PM, Fons Adriaensen wrote:

On Tue, Feb 19, 2013 at 05:49:37AM +1100, David Worrall wrote:


Does anone know of such a beast?
(I thought of putting the TetraMic in a plastic bag, but I'm not sure Len would 
approve :-)


Don't know what Len will think of it, but putting a Tetramic
(or any such mic) in a plastic bag isn't likely to produce
anything usable. Basic problem is that the acoustic impedance
of water is around 3400 times higher than that of air, so the
water/air interface will reflect almost all energy. You need
a transducer that is more or less matched to the acoustic
impedance.


Or how one might go about building one...
Failing which, does anyone have a recommendation on a cost-effective 
single-channel unit?


Have a look at 
Prices start at around $130.

I know of one experimental underwater AMB mic using these -
but can't tell much more.

Most hydrophones (and certainly any low-cost ones) will be
omnis, so the A/B processing will be very different from
what is required for a normal tetra mic using directional
capsules. If they are not omnis then calibration becomes
a real practical problem, it requires underwater impulse
response measurements which in turn require a calibrated
underwater source - an expensive item.


like fons says, your usual hydrophone will be an omni.

the speed of sound is quite high under water, so you cannot easily 
design an acoustic delay element to obtain a useful directional response.


if you don't want to use spaced omnis, check out he sonar surround stuff:
http://www.ambient.de/en/products/ambient-recording/underwater/directivity-sphere.html
not ambisonic, but at least you get some surround information, which is 
quite an engineering feat. the guy who makes them is really kind of 
cool, i've talked to him at tonmeistertagung 2010 in leipzig...


--
Jörn Nettingsmeier
Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487

Meister für Veranstaltungstechnik (Bühne/Studio)
Tonmeister VDT

http://stackingdwarves.net

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Re: [Sursound] Ambisonic hydrophone?

[Fons Adriaensen]

On Tue, Feb 19, 2013 at 05:49:37AM +1100, David Worrall wrote:

> Does anone know of such a beast?
> (I thought of putting the TetraMic in a plastic bag, but I'm not sure Len 
> would approve :-)

Don't know what Len will think of it, but putting a Tetramic
(or any such mic) in a plastic bag isn't likely to produce 
anything usable. Basic problem is that the acoustic impedance
of water is around 3400 times higher than that of air, so the
water/air interface will reflect almost all energy. You need
a transducer that is more or less matched to the acoustic
impedance.

> Or how one might go about building one...
> Failing which, does anyone have a recommendation on a cost-effective 
> single-channel unit?

Have a look at 
Prices start at around $130.

I know of one experimental underwater AMB mic using these -
but can't tell much more.

Most hydrophones (and certainly any low-cost ones) will be 
omnis, so the A/B processing will be very different from
what is required for a normal tetra mic using directional
capsules. If they are not omnis then calibration becomes
a real practical problem, it requires underwater impulse
response measurements which in turn require a calibrated
underwater source - an expensive item.

Ciao,

-- 
FA

A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)

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[Sursound] imm sound...

[j.l.anderson]

Hi All,

Not sure if I've missed discussion on this previously, or not...

Looks like imm sound, a start-up spun out of Barcelona Media 
(http://barcelonamedia.org/section/bm-r-d/audio), has recently been 
purchased by Dolby. From their white paper 
(http://immsound.com/0112_immWhitePaper.pdf) appears they're doing 
sound-scene scripting rendered via HOA.


So is Dolby getting into HOA, now?


My best,


Joseph Anderson

j.ander...@ambisonictoolkit.net
http://www.ambisonictoolkit.net



 
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[Sursound] Smart speakers

[Michael Chapman]

"Sonos Soundbar aims to ease pain of setting up home theatre sound systems
Co-founder Tom Cullen talks smart speakers ..."


I searched the article for an interesting quote ... but it is mostly froth
;->

M


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Re: [Sursound] Any experience with dome acoustics?

[Ben Bloomberg]

installing ambi-based 3D
> >>> sound into 'dome' shaped replay environments?
> >>>
> >>> Any tips, specifically on speaker placement, approaches, etc.
> >>>
> >>> The problems I am facing include a 12 foot 240 degree partial dome
> made of
> >>> fabric, an 18 foot 240 degree partial dome using fiberglass and a much
> >>> bigger 40 foot 360 degree full dome in fiberglass.
> >>>
> >>> All of the above will actually be 1/2 domes in the sense they are not
> full
> >>> spheres, but 1/2 a sphere resting on the ground.
> >>>
> >>> My only prior experience was with a full sphere, fibre dome that was a
> >>> nightmare to put sound into…
> >>>
> >>> One option for the 40 foot dome is to use a central cluster of
> directional
> >>> speakers, hung in a "chandelier" that would use the dome surface as a
> >>> virtual speaker through reflection, but I have never tried this. My
> concern
> >>> with this is that the listeners (who will be roughly central in all
> these
> >>> dome areas) will hear both the direct sound and reflected sound and
> end-up
> >>> with a confused mess.
> >>>
> >>> For all of these domes there will be an 18" skirt area below the dome
> that
> >>> could be used for loudspeakers around the periphery - is it better to
> try
> >>> to beam the sound directly at the listeners position, or perhaps use a
> more
> >>> diffuse speaker, facing up into the dome face? There will be space to
> get
> >>> at least one speaker overhead for all configurations.
> >>>
> >>> Regards, Neil
> >>>
> >>> ___
> >>> Sursound mailing list
> >>> Sursound@music.vt.edu
> >>> https://mail.music.vt.edu/mailman/listinfo/sursound
> >>>
> >>
> >>
> >>
> >> --
> >> 07580951119
> >>
> >> augustine.leudar.com
> >> -- next part --
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> >> ___
> >> Sursound mailing list
> >> Sursound@music.vt.edu
> >> https://mail.music.vt.edu/mailman/listinfo/sursound
> >
> >
> >
> > --
> > As of 1st October 2012, I have retired from the University, so this
> > disclaimer is redundant
> >
> >
> > These are my own views and may or may not be shared by my employer
> >
> > Dave Malham
> > Ex-Music Research Centre
> > Department of Music
> > The University of York
> > Heslington
> > York YO10 5DD
> > UK
> >
> > 'Ambisonics - Component Imaging for Audio'
> > ___
> > Sursound mailing list
> > Sursound@music.vt.edu
> > https://mail.music.vt.edu/mailman/listinfo/sursound
>
> _
> 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
>
>
>
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[Sursound] Ambisonic hydrophone?

[David Worrall]

Now you've gotten me into a comms mode ... :-) 

Does anone know of such a beast?
(I thought of putting the TetraMic in a plastic bag, but I'm not sure Len would 
approve :-)

Or how one might go about building one...
Failing which, does anyone have a recommendation on a cost-effective 
single-channel unit?


David
_
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





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Re: [Sursound] Any experience with dome acoustics?

[David Worrall]

; One option for the 40 foot dome is to use a central cluster of directional
>>> speakers, hung in a "chandelier" that would use the dome surface as a
>>> virtual speaker through reflection, but I have never tried this. My concern
>>> with this is that the listeners (who will be roughly central in all these
>>> dome areas) will hear both the direct sound and reflected sound and end-up
>>> with a confused mess.
>>> 
>>> For all of these domes there will be an 18" skirt area below the dome that
>>> could be used for loudspeakers around the periphery - is it better to try
>>> to beam the sound directly at the listeners position, or perhaps use a more
>>> diffuse speaker, facing up into the dome face? There will be space to get
>>> at least one speaker overhead for all configurations.
>>> 
>>> Regards, Neil
>>> 
>>> ___
>>> Sursound mailing list
>>> Sursound@music.vt.edu
>>> https://mail.music.vt.edu/mailman/listinfo/sursound
>>> 
>> 
>> 
>> 
>> --
>> 07580951119
>> 
>> augustine.leudar.com
>> -- next part --
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>> ___
>> Sursound mailing list
>> Sursound@music.vt.edu
>> https://mail.music.vt.edu/mailman/listinfo/sursound
> 
> 
> 
> -- 
> As of 1st October 2012, I have retired from the University, so this
> disclaimer is redundant
> 
> 
> These are my own views and may or may not be shared by my employer
> 
> Dave Malham
> Ex-Music Research Centre
> Department of Music
> The University of York
> Heslington
> York YO10 5DD
> UK
> 
> 'Ambisonics - Component Imaging for Audio'
> ___
> Sursound mailing list
> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound

_
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



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Re: [Sursound] Any experience with dome acoustics?

[Augustine Leudar]

Please let us know anything you find out 

On 18 February 2013 17:50, Dave Malham  wrote:

> The guys you need to talk to are  Dave Worrall  and Kimmo Vennonen who
> have one a lot of things in Geodesic domes down in Oz. Dave, at least,
> was a member of this group- he as a website at
> http://www.avatar.com.au/worrall/
>
>
>  Dave
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Re: [Sursound] Any experience with dome acoustics?

[Dave Malham]

The guys you need to talk to are  Dave Worrall  and Kimmo Vennonen who
have one a lot of things in Geodesic domes down in Oz. Dave, at least,
was a member of this group- he as a website at
http://www.avatar.com.au/worrall/


 Dave

On 18 February 2013 17:35, Augustine Leudar  wrote:
> Hi there -
> I did several large  (about 4 acres) walk through  sound installations in
> the dome shaped tropical biome at the Eden project in Cornwall . I guess my
> application would be very different from yours. I designed the sound
> installation in an adjacent dome first - there were the weirdest
> reflections ever - for example at certain frequencies the sound pooled and
> was louder in one tiny patch on the other side of the building than 3 m
> away from the speaker etc etc. When I got it in the main biome it sounded
> completely different of course.
> The only thing I can advise you is not to go in with a set idea of how your
> going to do it but to try different configurations and see what sounds best
> once your in there - I know its a pain in the neck but these things usually
> need to be tuned to acoustic peculiarities that are impossible to predict.
> Its why I always like to have at elast three days before an event to do
> this.
> You can read about some the installations
> here<http://web.archive.org/web/20110719132826/http://www.edenproject.com/come-and-visit/whats-on/heart-of-darkness.php>
> Hope this helps !
>
>
>
> On 18 February 2013 16:47, Neil Waterman  wrote:
>
>> Greetings,
>>
>> Does anyone on the list have prior experience installing ambi-based 3D
>> sound into 'dome' shaped replay environments?
>>
>> Any tips, specifically on speaker placement, approaches, etc.
>>
>> The problems I am facing include a 12 foot 240 degree partial dome made of
>> fabric, an 18 foot 240 degree partial dome using fiberglass and a much
>> bigger 40 foot 360 degree full dome in fiberglass.
>>
>> All of the above will actually be 1/2 domes in the sense they are not full
>> spheres, but 1/2 a sphere resting on the ground.
>>
>> My only prior experience was with a full sphere, fibre dome that was a
>> nightmare to put sound into…
>>
>> One option for the 40 foot dome is to use a central cluster of directional
>> speakers, hung in a "chandelier" that would use the dome surface as a
>> virtual speaker through reflection, but I have never tried this. My concern
>> with this is that the listeners (who will be roughly central in all these
>> dome areas) will hear both the direct sound and reflected sound and end-up
>> with a confused mess.
>>
>> For all of these domes there will be an 18" skirt area below the dome that
>> could be used for loudspeakers around the periphery - is it better to try
>> to beam the sound directly at the listeners position, or perhaps use a more
>> diffuse speaker, facing up into the dome face? There will be space to get
>> at least one speaker overhead for all configurations.
>>
>> Regards, Neil
>>
>> ___
>> Sursound mailing list
>> Sursound@music.vt.edu
>> https://mail.music.vt.edu/mailman/listinfo/sursound
>>
>
>
>
> --
> 07580951119
>
> augustine.leudar.com
> -- next part --
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-- 
As of 1st October 2012, I have retired from the University, so this
disclaimer is redundant


These are my own views and may or may not be shared by my employer

Dave Malham
Ex-Music Research Centre
Department of Music
The University of York
Heslington
York YO10 5DD
UK

'Ambisonics - Component Imaging for Audio'
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Re: [Sursound] Any experience with dome acoustics?

[Augustine Leudar]

Hi there -
I did several large  (about 4 acres) walk through  sound installations in
the dome shaped tropical biome at the Eden project in Cornwall . I guess my
application would be very different from yours. I designed the sound
installation in an adjacent dome first - there were the weirdest
reflections ever - for example at certain frequencies the sound pooled and
was louder in one tiny patch on the other side of the building than 3 m
away from the speaker etc etc. When I got it in the main biome it sounded
completely different of course.
The only thing I can advise you is not to go in with a set idea of how your
going to do it but to try different configurations and see what sounds best
once your in there - I know its a pain in the neck but these things usually
need to be tuned to acoustic peculiarities that are impossible to predict.
Its why I always like to have at elast three days before an event to do
this.
You can read about some the installations
here<http://web.archive.org/web/20110719132826/http://www.edenproject.com/come-and-visit/whats-on/heart-of-darkness.php>
Hope this helps !



On 18 February 2013 16:47, Neil Waterman  wrote:

> Greetings,
>
> Does anyone on the list have prior experience installing ambi-based 3D
> sound into 'dome' shaped replay environments?
>
> Any tips, specifically on speaker placement, approaches, etc.
>
> The problems I am facing include a 12 foot 240 degree partial dome made of
> fabric, an 18 foot 240 degree partial dome using fiberglass and a much
> bigger 40 foot 360 degree full dome in fiberglass.
>
> All of the above will actually be 1/2 domes in the sense they are not full
> spheres, but 1/2 a sphere resting on the ground.
>
> My only prior experience was with a full sphere, fibre dome that was a
> nightmare to put sound into…
>
> One option for the 40 foot dome is to use a central cluster of directional
> speakers, hung in a "chandelier" that would use the dome surface as a
> virtual speaker through reflection, but I have never tried this. My concern
> with this is that the listeners (who will be roughly central in all these
> dome areas) will hear both the direct sound and reflected sound and end-up
> with a confused mess.
>
> For all of these domes there will be an 18" skirt area below the dome that
> could be used for loudspeakers around the periphery - is it better to try
> to beam the sound directly at the listeners position, or perhaps use a more
> diffuse speaker, facing up into the dome face? There will be space to get
> at least one speaker overhead for all configurations.
>
> Regards, Neil
>
> ___
> Sursound mailing list
> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound
>



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Re: [Sursound] Any experience with dome acoustics?

[Ben Bloomberg]

We did the American Museum of Natural History planetarium. It's
a perforated, painted 70ft aluminum dome with 24 Meyer boxes behind it and
a cluster of CQ2's and subs at the top splayed out pointing in 360 degrees
audience (sort of like a front fill).

The reflections made it really difficult to have any kind of coherence and
this was the best possible scenario, with the speakers outside the dome
pointing in.

What I noticed was the ambisonic material felt very "high" compared to
other spaces. It would have been nice to have speakers below the dome,
especially subs to pull the image downward a bit by having sources below
the audience as well as above.

There wasn't enough time to be particularly scientific about the whole
thing, but those were my impressions. The audience seemed to like it quite
a bit other than that.

Ben


On Mon, Feb 18, 2013 at 12:15 PM, Michael Chapman  wrote:

> > Greetings,
> >
> > Does anyone on the list have prior experience installing ambi-based 3D
> > sound into 'dome' shaped replay environments?
> >
>
> I'd try looking at Graz* publications.
>
> It won't help me, but may help other responders:
> What is ear height ?
>
> I.e. are the listeners at ground level?
> Standing or sitting?
>
> Michael
>
> *Whilst they have done half spheres ... I think they avoided contending
> with reflections ... ;-(>
>
>
>
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Re: [Sursound] Any experience with dome acoustics?

[Neil Waterman]

Listeners could be anywhere from more or less prone (floor level), through 
seated to standing, but located at the center of the dome. 

The main focus will be the front 90 degree arc, if that helps.

Thanks, Neil

On Feb 18, 2013, at 12:15 PM, Michael Chapman  wrote:

>> Greetings,
>> 
>> Does anyone on the list have prior experience installing ambi-based 3D
>> sound into 'dome' shaped replay environments?
>> 
> 
> I'd try looking at Graz* publications.
> 
> It won't help me, but may help other responders:
> What is ear height ?
> 
> I.e. are the listeners at ground level?
> Standing or sitting?
> 
> Michael
> 
> *Whilst they have done half spheres ... I think they avoided contending
> with reflections ... ;-(>
> 
> 
> 
> ___
> Sursound mailing list
> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound
> 

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Re: [Sursound] Any experience with dome acoustics?

[Michael Chapman]

> Greetings,
>
> Does anyone on the list have prior experience installing ambi-based 3D
> sound into 'dome' shaped replay environments?
>

I'd try looking at Graz* publications.

It won't help me, but may help other responders:
What is ear height ?

I.e. are the listeners at ground level?
Standing or sitting?

Michael

*Whilst they have done half spheres ... I think they avoided contending
with reflections ... ;-(>



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[Sursound] Any experience with dome acoustics?

[Neil Waterman]

Greetings,

Does anyone on the list have prior experience installing ambi-based 3D sound 
into 'dome' shaped replay environments? 

Any tips, specifically on speaker placement, approaches, etc. 

The problems I am facing include a 12 foot 240 degree partial dome made of 
fabric, an 18 foot 240 degree partial dome using fiberglass and a much bigger 
40 foot 360 degree full dome in fiberglass. 

All of the above will actually be 1/2 domes in the sense they are not full 
spheres, but 1/2 a sphere resting on the ground.

My only prior experience was with a full sphere, fibre dome that was a 
nightmare to put sound into…

One option for the 40 foot dome is to use a central cluster of directional 
speakers, hung in a "chandelier" that would use the dome surface as a virtual 
speaker through reflection, but I have never tried this. My concern with this 
is that the listeners (who will be roughly central in all these dome areas) 
will hear both the direct sound and reflected sound and end-up with a confused 
mess. 

For all of these domes there will be an 18" skirt area below the dome that 
could be used for loudspeakers around the periphery - is it better to try to 
beam the sound directly at the listeners position, or perhaps use a more 
diffuse speaker, facing up into the dome face? There will be space to get at 
least one speaker overhead for all configurations.

Regards, Neil

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Re: [Sursound] Sound Field Microphone

[Michael Chapman]

> Good Morning Everyone,
>
> I'm interesting to buy a Sound Field Microphone but I don't have any
> experience in this field. Could you recommend me some models or brands
> according to your experience?
>

There are many on here more expert than I.

But to get the ball rolling, I think you are limited to:

1) Soundfield (tradename)

2) TeraMic (Coresound)

3) Home made.

(1) is ??four times the price of (2).
Jörn published a review on a (1) he was leant. (I think a direct
comparison with a (2) he owns ... but time dims the memory.) Conclusion
(IIRC) was he'd buy one ... if he had the money. The review should still
be on the Web. The link in this lists archive.

(2) has become the 'standard'.
Len Moskovitz (owner of Coresound) is on this list.
I have one.
'No complaints' is an understatement ... ;-)>

(3) Is I presume fiddly.
But that pales to nothing compared with calibration/correction.
So I won't expand.

Secondhand ones are from time to time announced on here ...

Corrections will I hope now flood in ;-)>

Michael


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[Sursound] Sound Field Microphone

[Diego Mauricio Murillo Gomez]

Good Morning Everyone,

I'm interesting to buy a Sound Field Microphone but I don't have any
experience in this field. Could you recommend me some models or brands
according to your experience?

Thanks,

Best regards,

Diego
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Re: [Sursound] Unusual Binaural Head

[Augustine Leudar]

I thought they'd spent years working out the average shaped head - surely
having ears in your nose is going to mess up the ILD ITDs, minute
reflections etc used for localisation, directional bands etc ?  - plus
there's no shoulders also reflections from which are also used used for
elevation cues

On 12 February 2013 19:08, Len Moskowitz  wrote:

> Eric Benjamin  wrote:
>
>  This seems to me to be a bit like a device created by the folks at CIPIC,
>> at the
>> University of California at Davis:
>>
>
> Google what's coming from Dysonics, Ralph Algazi's company .
>
>
> Len Moskowitz (mosko...@core-sound.com)
> Core Sound LLC
> www.core-sound.com
> Home of TetraMic
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Re: [Sursound] FW: [allowed] Re: Gran Sasso - first impressions

[Augustine Leudar]

Would like to get some of these :

http://www.bbc.co.uk/news/magazine-20773690


On 18 February 2013 12:52, umashankar manthravadi wrote:

> I meant this message for the group umashankar
>
>  From: umasha...@hotmail.com
> To: s...@mchapman.com
> Subject: RE: [Sursound] [allowed] Re:  Gran Sasso - first impressions
> Date: Mon, 18 Feb 2013 15:52:29 +0530
>
>
>
>
> towards end of last year, the International Association of Sound and Audio
> Visual Archives (IASA) held its annual conference in Delhi, and I read a
> short paper on preserving the acoustics of spaces. if anybody wants to
> read, I can forward it. it will be published in the IASA journal's January
> issue, I am told.
> In this paper I was arguing for the need of low cost means for measuring
> acoustics ambisonically in as many places as possible.
>
> umashankar
>
> i have published my poems. read (or buy) at
> http://stores.lulu.com/umashankar
>
> > Date: Mon, 18 Feb 2013 10:18:34 +
> > From: s...@mchapman.com
> > To: sursound@music.vt.edu
> > Subject: Re: [Sursound] [allowed] Re:  Gran Sasso - first impressions
> >
> > > Here's a suggestion: a place that is publicly-accessible, but is under
> > threat ...
> >
> > Also look at
> > <http://www.subbrit.org.uk/>
> > "Our members study and investigate man-made and man-used underground
> > places — from mines to railway tunnels, military defences to nuclear
> > bunkers and everything in between."
> >
> > I think the 'best' Cold War sites suffer from asbestos ... but if white
> > suits and face masks are not a problem it might be arrangeable ...
> >
> > Michael
> >
> >
> > (Near Bath is the old ASG (?Corsham) which whilst (I hope;-)>
> declassified
> > may not be abandonned. I suspect though other 'volumes' on the above and
> > similar sites would be more physicall interesting ...)
> >
> > Peter, remember being taugh that 'the climax vegetation was oak forest'
> > ... but no longer the context of teaching ...
> > M
> >
> >
> >
> >
> >
> >
> > ___
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> > Sursound@music.vt.edu
> > https://mail.music.vt.edu/mailman/listinfo/sursound
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[Sursound] FW: [allowed] Re: Gran Sasso - first impressions

[umashankar manthravadi]

I meant this message for the group umashankar

 From: umasha...@hotmail.com
To: s...@mchapman.com
Subject: RE: [Sursound] [allowed] Re:  Gran Sasso - first impressions
Date: Mon, 18 Feb 2013 15:52:29 +0530




towards end of last year, the International Association of Sound and Audio 
Visual Archives (IASA) held its annual conference in Delhi, and I read a short 
paper on preserving the acoustics of spaces. if anybody wants to read, I can 
forward it. it will be published in the IASA journal's January issue, I am told.
In this paper I was arguing for the need of low cost means for measuring 
acoustics ambisonically in as many places as possible.
 
umashankar

i have published my poems. read (or buy) at http://stores.lulu.com/umashankar
 
> Date: Mon, 18 Feb 2013 10:18:34 +
> From: s...@mchapman.com
> To: sursound@music.vt.edu
> Subject: Re: [Sursound] [allowed] Re:  Gran Sasso - first impressions
> 
> > Here's a suggestion: a place that is publicly-accessible, but is under
> threat ...
> 
> Also look at
> <http://www.subbrit.org.uk/>
> "Our members study and investigate man-made and man-used underground
> places — from mines to railway tunnels, military defences to nuclear
> bunkers and everything in between."
> 
> I think the 'best' Cold War sites suffer from asbestos ... but if white
> suits and face masks are not a problem it might be arrangeable ...
> 
> Michael
> 
> 
> (Near Bath is the old ASG (?Corsham) which whilst (I hope;-)> declassified
> may not be abandonned. I suspect though other 'volumes' on the above and
> similar sites would be more physicall interesting ...)
> 
> Peter, remember being taugh that 'the climax vegetation was oak forest'
> ... but no longer the context of teaching ...
> M
> 
> 
> 
> 
> 
> 
> ___
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> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound

  
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Re: [Sursound] [allowed] Re: Gran Sasso - first impressions

[Michael Chapman]

> Here's a suggestion: a place that is publicly-accessible, but is under
threat ...

Also look at

"Our members study and investigate man-made and man-used underground
places — from mines to railway tunnels, military defences to nuclear
bunkers and everything in between."

I think the 'best' Cold War sites suffer from asbestos ... but if white
suits and face masks are not a problem it might be arrangeable ...

Michael


(Near Bath is the old ASG (?Corsham) which whilst (I hope;-)> declassified
may not be abandonned. I suspect though other 'volumes' on the above and
similar sites would be more physicall interesting ...)

Peter, remember being taugh that 'the climax vegetation was oak forest'
... but no longer the context of teaching ...
M






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Re: [Sursound] Sursound Digest,

[Augustine Leudar]

Oak, Hazel, Elm though there would have been some pine.

 (what forests did they have?)

>
> regards
>
>
> Dr Peter Lennox
>
> School of Technology,
> Faculty of Arts, Design and Technology
> University of Derby, UK
> e: p.len...@derby.ac.uk
> t: 01332 593155
> 
> From: sursound-boun...@music.vt.edu [sursound-boun...@music.vt.edu] On
> Behalf Of Steve Higgs [s...@originaudio.co.uk]
> Sent: 18 February 2013 09:37
> To: sursound@music.vt.edu
> Subject: Re: [Sursound] Sursound Digest,
>
> I have recorded just simple stereo voice in the full size recreation of
> Stonehenge, in technical terms the sound was dead weird and definatly a
> part
> of the mystic/character/use of the place.
> Steve Higgs
>
>
>
>
> > Date: Sun, 17 Feb 2013 07:59:02 +
> > From: Dave Malham 
> > Subject: Re: [Sursound] Gran Sasso - first impressions
> > To: Surround Sound discussion group 
> > Message-ID:
> > 
> > Content-Type: text/plain; charset=UTF-8
> >
> > Hi All,
> >
> >   When you think about it there's a whole bunch of places, some
> > perhaps of less overall importance to human progress, but
> > never-the-less exciting and interesting. How about someone in the
> > states approaching one of the museums with space shuttles in to get
> > IR's from the crew cabin/payload bay? Or maybe inside the rocket
> > nozzles of a Saturn rocket? Or, how about trying to persuade someone
> > to take a Tetramic and recorder up to the ISS? Inside the bridge deck
> > of the Milau Bridge? We already recorded in the Humber Bridge - but
> > not proper IR's so I'm thinking of going back to do it sometime.
> > There's been quite a few measurements of prehistoric sites - but not
> > many publicly accessible (any?) ones of modern sites of importance.
> >
> >   Get thinking, folks!
> >
> >  Dave
> > >
>
>
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> _
> The University of Derby has a published policy regarding email and
> reserves the right to monitor email traffic. If you believe this email was
> sent to you in error, please notify the sender and delete this email.
> Please direct any concerns to info...@derby.ac.uk.
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Re: [Sursound] Sursound Digest,

[Peter Lennox]

I'd hazard a guess that the semi-enclosed, symmetrical nature, with reflective 
surfaces converging at the centre, would have the effect of creating a 
concentric spatial effect - perceptually, the inside should sound quite 
intimate, but you can still hear the outside, which should actually sound 
further away. So there should be an emphasis on the divide between inside 
("inner circle") and outside ("plebs") - inside is where the heightened sense 
of being in a mystical place - and this is emphasised by hearing the ordinary 
people outside.

When it was built, not many people would experience 'indoor listening' with 
fairly reflective surfaces (caves, maybe) - I would guess the nearest they 
would get to this 'near things nearer, far things further' effect might be in 
certain forests, though as they didn't have pine forests, maybe not so much 
(what forests did they have?)

regards


Dr Peter Lennox

School of Technology,
Faculty of Arts, Design and Technology
University of Derby, UK
e: p.len...@derby.ac.uk
t: 01332 593155

From: sursound-boun...@music.vt.edu [sursound-boun...@music.vt.edu] On Behalf 
Of Steve Higgs [s...@originaudio.co.uk]
Sent: 18 February 2013 09:37
To: sursound@music.vt.edu
Subject: Re: [Sursound] Sursound Digest,

I have recorded just simple stereo voice in the full size recreation of
Stonehenge, in technical terms the sound was dead weird and definatly a part
of the mystic/character/use of the place.
Steve Higgs




> Date: Sun, 17 Feb 2013 07:59:02 +
> From: Dave Malham 
> Subject: Re: [Sursound] Gran Sasso - first impressions
> To: Surround Sound discussion group 
> Message-ID:
> 
> Content-Type: text/plain; charset=UTF-8
>
> Hi All,
>
>   When you think about it there's a whole bunch of places, some
> perhaps of less overall importance to human progress, but
> never-the-less exciting and interesting. How about someone in the
> states approaching one of the museums with space shuttles in to get
> IR's from the crew cabin/payload bay? Or maybe inside the rocket
> nozzles of a Saturn rocket? Or, how about trying to persuade someone
> to take a Tetramic and recorder up to the ISS? Inside the bridge deck
> of the Milau Bridge? We already recorded in the Humber Bridge - but
> not proper IR's so I'm thinking of going back to do it sometime.
> There's been quite a few measurements of prehistoric sites - but not
> many publicly accessible (any?) ones of modern sites of importance.
>
>   Get thinking, folks!
>
>  Dave
> >


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Re: [Sursound] Sursound Digest,

[Steve Higgs]

I have recorded just simple stereo voice in the full size recreation of 
Stonehenge, in technical terms the sound was dead weird and definatly a part 
of the mystic/character/use of the place.

Steve Higgs





Date: Sun, 17 Feb 2013 07:59:02 +
From: Dave Malham 
Subject: Re: [Sursound] Gran Sasso - first impressions
To: Surround Sound discussion group 
Message-ID:

Content-Type: text/plain; charset=UTF-8

Hi All,

  When you think about it there's a whole bunch of places, some
perhaps of less overall importance to human progress, but
never-the-less exciting and interesting. How about someone in the
states approaching one of the museums with space shuttles in to get
IR's from the crew cabin/payload bay? Or maybe inside the rocket
nozzles of a Saturn rocket? Or, how about trying to persuade someone
to take a Tetramic and recorder up to the ISS? Inside the bridge deck
of the Milau Bridge? We already recorded in the Humber Bridge - but
not proper IR's so I'm thinking of going back to do it sometime.
There's been quite a few measurements of prehistoric sites - but not
many publicly accessible (any?) ones of modern sites of importance.

  Get thinking, folks!

 Dave
> 



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