Huge speaker fakes the record room acousticsn - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 23rd September 2009, 08:40 PM   #1
diyAudio Member
 
Join Date: Feb 2008
Location: Erfurt, Germany
Send a message via ICQ to syntheticwave
Post Huge speaker fakes the record room acousticsn

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?
  Reply With Quote
Old 23rd September 2009, 09:30 PM   #2
chrisb is offline chrisb  Canada
diyAudio Member
 
Join Date: Aug 2002
Location: victoria BC
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.
__________________
now on sabbatical
  Reply With Quote
Old 23rd September 2009, 11:50 PM   #3
diyAudio Member
 
FullRangeMan's Avatar
 
Join Date: Aug 2009
Location: Brazil
Quote:
Originally Posted by syntheticwave View Post
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
__________________
>Never go to a psychiatrist, adopt a cat or dog from the streets. On the streets pets live only two years average.

Last edited by FullRangeMan; 23rd September 2009 at 11:54 PM.
  Reply With Quote
Old 24th September 2009, 06:25 AM   #4
diyAudio Member
 
Join Date: Feb 2008
Location: Erfurt, Germany
Send a message via ICQ to syntheticwave
Quote:
Originally Posted by chrisb View Post
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.
  Reply With Quote
Old 24th September 2009, 06:38 AM   #5
diyAudio Member
 
Pit Hinder's Avatar
 
Join Date: Nov 2006
Location: Hannover, Germany
Send a message via ICQ to 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.
  Reply With Quote
Old 24th September 2009, 07:42 AM   #6
Key is offline Key  United States
diyAudio Member
 
Join Date: Jan 2009
Man that page is hard to read. Was that translated from german with some program or something?
  Reply With Quote
Old 24th September 2009, 07:50 AM   #7
diyAudio Member
 
Pit Hinder's Avatar
 
Join Date: Nov 2006
Location: Hannover, Germany
Send a message via ICQ to Pit Hinder
No idea - the German version is as gobbledegookish.
  Reply With Quote
Old 24th September 2009, 05:10 PM   #8
diyAudio Member
 
Join Date: Feb 2008
Location: Erfurt, Germany
Send a message via ICQ to syntheticwave
Quote:
Originally Posted by FullRangeMan View Post
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.
  Reply With Quote
Old 25th September 2009, 08:24 PM   #9
diyAudio Member
 
Join Date: Feb 2008
Location: Erfurt, Germany
Send a message via ICQ to syntheticwave
Quote:
Originally Posted by Key View Post
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
  Reply With Quote
Old 25th September 2009, 09:07 PM   #10
Key is offline Key  United States
diyAudio Member
 
Join Date: Jan 2009
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.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Huge Room, Concrete and Glass ACFerguson Multi-Way 5 12th January 2009 02:33 AM
Huge sound, small room bjackson Multi-Way 16 31st October 2005 01:58 PM
Huge list of speaker related URLS wintermute Multi-Way 0 17th August 2005 01:51 PM
TEAC x-2000r record mode stuck. Record light flashes but won't play. Any ideas? mistered05 Analogue Source 1 30th June 2005 01:51 PM
Huge Concrete speaker cabinets in foundation Graydon Subwoofers 12 17th November 2004 04:53 PM


New To Site? Need Help?

All times are GMT. The time now is 02:26 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2