Huge speaker fakes the record room acousticsn

[syntheticwave]

Hi,
on the www.holophony.net website is simply described a grazy procedure:

The “Holophony”- solution based on a large-scale frontal WFS Loudspeaker screen, magenta drawn in the animation. Such arrangement can work truly in all three room dimensions. Over and above inside the near field of such huge resulting diaphragm the playback room acoustics become subordinate matter. Its reflections no longer must eliminate by strongly damping, but include purposefully in the synthesis. The loudspeaker screen aligns the direct wave and its first reflexions in the playback room for fake the recording room reflections in time, level and direction. They arrive, particularly reflected from the playback room walls, by the listener’s ears in the same manner as by the ears of a virtual listener in the recording room.

It is comparable the sound projectors, but doesn`t fake the loudspeakers, but the source itself. What are you think about the procedure?

[chrisb]

If I read this correctly, the intention is to "fake" the exact acoustic signature that would be heard by "a virtual listener in the recording room" regardless of the playback room's acoustics?



1)the very pretty graphics on the linked site and veracity of the technology aside, it still sounds like more multi-channel voodoo to me, and more importantly

2)exactly why would "faking" the recording room be desirable?

Perhaps it should say "virtual listener in the virtual space " intended by the mixing engineers


In how many of modern day recordings are many of the "instruments" virtual - as in never present in any physical space, and among those real instruments/artists, how often are they all in the same acoustic space and time?

I'm sure that more than a few recording & mixing engineers would describe the tremendous efforts undertaken to overcome the acoustic deficiencies of the frequently quite disparate spaces in which the original sounds are collected, before the real "black magic" of synthesis occurs.

[FullRangeMan]

Originally Posted by syntheticwave

It is comparable the sound projectors, but doesn`t fake the loudspeakers, but the source itself. What are you think about the procedure?

This is the best mono system I see on plans. Personally I could prefer a NXT speaker as TV screen and speaker, as is know the NXT is the own screen. Cause a NXT panel is bipolar(there is no 5dB of loss as dipole) and is onmidirectional like this system you show.
http://en.wikipedia.org/wiki/Distrib...de_loudspeaker and http://www.vxm.com/NXT.html
Regards

[syntheticwave]

Originally Posted by chrisb

If I read this correctly, the intention is to "fake" the exact acoustic signature that would be heard by "a virtual listener in the recording room" regardless of the playback room's acoustics?


1)the very pretty graphics on the linked site and veracity of the technology aside, it still sounds like more multi-channel voodoo to me, and more importantly

2)exactly why would "faking" the recording room be desirable?

Perhaps it should say "virtual listener in the virtual space " intended by the mixing engineers


In how many of modern day recordings are many of the "instruments" virtual - as in never present in any physical space, and among those real instruments/artists, how often are they all in the same acoustic space and time?

Hello Chris,

Of course today productions mostly are art- objects, the instruments during recording never seen real room acoustics.

But the traditionally procedures causing a lot of contradictorily cues, because the wave fronts doesn’t arrive from directions, comparably the natural spatial distribution in a real recording room. Our head and pinna filter system produce very strong level changes in the frequency response of each single wave front, if its direction differs from the desired direction. That’s important especially for the first reflections. The cues of ILD particularly misguiding during conventionally audio reproduction, especially if the playback room produce own wave fronts from wrong directions.

You shouldn’t see the described procedure as a tool for produce a copy of a genuine sound event, but as tool for produce more natural audio art; a more nature like synthesis.


H.

[Pit Hinder]

What the eff would you need such a system for? OK, if you have the LPs Pioneer made in the 70s, with orchestra pieces recorded with but one pair of stereo mikes...but then you´d have to get your living room´s acoustics out of the equation, ie use headphones and store the superspeakers in the garage.

[Key]

Man that page is hard to read. Was that translated from german with some program or something?

[Pit Hinder]

No idea - the German version is as gobbledegookish.

[syntheticwave]

Originally Posted by FullRangeMan

This is the best mono system I see on plans. Personally I could prefer a NXT speaker as TV screen and speaker, as is know the NXT is the own screen. Cause a NXT panel is bipolar(there is no 5dB of loss as dipole) and is onmidirectional like this system you show. http://en.wikipedia.org/wiki/Distrib...de_loudspeaker and http://www.vxm.com/NXT.html Regards

Hi FullRangeMan,

the distributed mode loudspeakers would work perfect for the application, but there are some further possibilities. Because of the perfect load adaption of the resulting diaphragm we need only very small excursions. For 100 inch diameter resulting diaphragm would cheap solutions as the Warwick Audio foil nearly sufficient.

But also the German Fraunhofer institute works on WFS flat loudspeaker solutions as described in the Scientificblog. The future is possibly not bright, but really loud by such developments.

Regards H.

[syntheticwave]

Originally Posted by Key

Man that page is hard to read. Was that translated from german with some program or something?

Hello Key,

wasn`t any engine, but human pressed wrong key.

I have correct the first chapter now, the next in the next week. Sorry for mistakes and thanks for advices.

Regards, Helmut

[Key]

Cool, will check it out. Really it's better than I could do with a translation - kinda hard to learn a new language in America since everyone speaks English.