Re: [Sursound] Ambisonics - Decoding 16 channels in DAW

2013-07-03 Thread ThomasChen
I have done this--smbisonic decoded to 2 hexagons one above the  other.  I 
have also add a stereo mix into the decode.  It is known as  B+
ThomasChen
 
 
In a message dated 7/3/2013 7:34:00 A.M. Pacific Daylight Time,  
m...@moritzfehr.de writes:

hi  everyone,

thank you very much for your replies -- what i would like to  achieve is 
playing a mix of a b-format recording combined with several mono-  and 
stereofiles (have been doing this a lot, but only with a maximum of 8  
channels). 
my mixing platform is reaper on osx.

i am going to record a  space with a soundfield mic and i would like to 
then make a simulation of it  by setting up an array of 16 speakers. one 
speaker circle is on ear level, the  other one above.
i would like to use the second circle above to add height  information to 
the ambisonic soundfield.

as i can see now, adding a  second instance of vvmic or harpex might not be 
suitable as it would generate  two separate soundfields. (not sure if i am 
right here...)
the b2x plugins  seem to have a maximum of 12 outputs. ...i will look at 
ambdec but it does  seem to need a lot of routing using jack. 

would the decopro vst plugin  (http://www.gerzonic.net/) be a good choice 
for this purpose?

thank you  !
moritz




Am 03.07.2013 um 15:38 schrieb Matthias  Kronlachner:

 hi!
 
 you may just add an additional 8  channel track for a second instance of 
vvmicvst in reaper.
 send the 4  channel ambisonics signal to this newly created instance 
hosting vvmicvst, and  route the outputs as you like.
 
 but if this approach gives you  good decoding is another issue..
 
 matthias
 
 On  7/3/13 1:37 PM, Moritz Fehr wrote:
 Dear Members of  Sursound,
 
 i am using the VVMicVst Plugin in Reaper  for mixing and decoding my 
B-Format recordings. The plugin is limited to an  output of 8 channels. For a 
new sound installation, I would like to decode to  16 channels (two circles 
of 8 speakers stacked). I know that I could use ICST  for Max, but if 
possible in any way, I would to keep on working in a DAW. Are  there any other 
plugins or tools available for this purpose (OSX)  ?
 
 Any help would be greatly appreciated!
  
 Best,
 Moritz
 
 
  
 
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Moritz Fehr
mobil:  01749231733
moritzf...@web.de
www.moritzfehr.de

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Re: [Sursound] Domestic Concert Hall

2012-07-09 Thread ThomasChen
Ralph
 
I have created a suite of rooms in impulse response of varying size, shape  
and wall material.  I have done this in Voxengo Impulse Modeler.  I  have 
created 5 frontal positions with early reflections and time values.   There 
is a late reflections/reverberation stereo inpulses.  I have learned  to mix 
impulses from the same room with different mic placement and differing  
diffusion.  The direct and early reflections give the location and change  the 
signal from mono to stereo. The late room give ambience.  
 
This fall I am hoping to create a suite of B format rooms with the late  
reflections and some time consideration.  This would be added to direct and  
early reflections which can be panned to pairs of speakers or other means of  
localization.  While not WFS, I think that it will be very  satisfactory.
 
ThomasChen
 
 
In a message dated 7/7/2012 7:16:12 P.M. Pacific Daylight Time,  
rglas...@yahoo.com writes:

Using a  new HP Pavillion HPE h8-1280t desktop Windows 7 PC with a solid 
state disk  drive and RME ADAT sound cards I have been able to generate 
ambience signals  for 26 surround speakers in essentially real time with only 
about 12  milliseconds of latency.  The computer uses AudioMulch as the DAW  
with 13 iterations of the Waves IL-R VST plugin as the  convolver.  The library 
of concert halls and other hall impulse responses  from Waves who include 
some originally from Angelo Farina is  now so large that it occupies two 
DVDs.  When running at 44.1 with a  2.0 input the computer load is only 39% so 
I 
may have overdone it.One can easily have up to 32 speakers using all 4 
ADAT  outputs.

But basically what I have for the first time is a truly  diffuse soundfield 
with a low IACC.  That is, this is a sound field with  at least some of the 
most important properties of a real concert hall.   When you turn on the 26 
speakers you get an enhanced sense of being  there plus clarity, depth and 
realism in general.  Since the  Waves IRs do not really allow for 
partitioning the impulse responses  to particular speakers, this system is not 
ideal, 
but I believe it can be  shown that once a field is diffuse, but still with 
large interaural  level and interaural time differences, most humans will 
accept the  field as reasonably realistic even if it represents a concert hall 
that  does not exist.  One combines a selection of IRs from the same or 
similar  halls to maintain the necessary diversity and prevent aliasing or 
monophonic  impairments.

Of course, now that I have done this it is  clear that there are perhaps no 
more than three individuals in the world that  would have the space, the 
skill, the money, and the love of classical music,  to want to or be able to 
implement this.  It is certainly not for solo  electric guitar oriented 
stereophiles.  However, I think serious music  schools installing such a 
reproduction system would be able to  evaluate their performances more 
realistically 
and conductors would be able to  fine tune their technique etc.

Getting the hall ambience  this way certainly beats trying to record the 
hall during a performance and  then delivering it via normal media along with 
the direct  sound. 

Ralph  Glasgal
http://www.ambiophonics.org/
glas...@ambiophonic.org

Note  I have to use the Yahoo address because this list sofware does not 
like .org  addresses.  
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Re: [Sursound] Audium - sound sculpture exhibit

2012-04-19 Thread ThomasChen
I have been to the Audium several years ago.  It is a fascinating  audio 
experience.  It is not a coherent B format replay but rather a  creative 
experience.  I would recommend that you listen to this.
 
ThomasChen  
 
 
In a message dated 4/19/2012 4:41:22 P.M. Pacific Daylight Time,  
er...@theaudioarchive.com writes:


Some  lighter reading - I just learned about this.  The perfect field  trip
for this group's  membership:

http://www.audium.org/


Audium is the only  theatre of its kind in the world, pioneering the
exploration of space in  music. The theatre's 176 speakers bathe listeners
in sounds that move past,  over, and under them. Sound sculptures are
performed in darkness in the  49-seat theatre.

Audium has been around for  awhile:

http://www.audium.org/omhpp.cgi?src=archive/archive_history.hpp


with  4 channels (8 speakers in 1960) and growing from there.  Okay,  the
speakers can *move* - cheating!

Anyone from this list been to  Audium?  I've not been yet, but am curious.

My first post ever to  this group after lurking for 7+ years.

Eric Jacobs

The Audio  Archive, Inc.
Disc and Tape Audio Transfer Services and Preservation  Consulting
http://www.theaudioarchive.com



tel:  408.221.2128
mailto:er...@theaudioarchive.com





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Re: [Sursound] Ambisonic Speakers what type to buy for 8 speaker setup

2011-05-06 Thread thomaschen
I use two octagons with one above the other.  The decoding is much 
simpler for Z with the angles the same.  My decoder is based on the 
angle from zero in front.


ThomasChen


-Original Message-
From: Pedro Lopes pedro.lo...@ist.utl.pt
To: Surround Sound discussion group sursound@music.vt.edu
Sent: Thu, May 5, 2011 10:46 am
Subject: Re: [Sursound] Ambisonic Speakers what type to buy for 8 
speaker setup



Hi everyone,Impressive setup you have there.I'm also building an 8 
speaker ambisonic setup, although budget limitationswill force me to 
buy something like YamahaHs50, KRK rokit, or Mackies...something in the 
150€ price range per speaker.ThomasChen do you use two octagons one 
above the other?I'm researching about my speaker positioning, and 
considering two quads(rectangles), one vertical and one horizontal. The 
goal is to provide asmall space (3 by 3 meters) with 3D sound with 
ambisonics. Whats the generalthough on 8 speaker positioning?I attached 
an idea of the placing, for illustration purposes.best regards,PedroOn 
Thu, May 5, 2011 at 6:38 PM, thomasc...@aol.com wrote: Darren I am 
using a dual octagon setup with ambisonic plus stereo playback.   I 
have custom decoder implemented in Scope--Soniccore.  I am using 
Genelec speakers with larger for the front and small for the rear.  
The addition of powered speakers is that the addition gives much 
greater sound pressure. The advantage of distributed sound sources is 
that the sound level is more tolerable than from two.  They are in a 
1000 sq. ft. room ThomasChen In a message dated 5/5/2011 6:07:32 
A.M. Pacific Daylight Time, i...@sacredresonance.com.au writes: Hi  
Darren here, I am doing a surround sound / octagon (8 speakers) setup 
 using ambisonic software to create immersive sound running out of 
M-aduio  firewire 410 I am wanting to do 30-80 people in a room I 
want to do  testing in house and use for live setup as well - what 
you think is  the cheapest option being 8 speakers. 1. What speakers 
should: (to  buy) a) Monitors (near field) powered - would these work 
? being near  field. b) or just powered speakers. Please any ideas 
of what to  buy with this setup thanks Darren -- next 
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https://mail.music.vt.edu/mailman/listinfo/sursound-- Pedro Lopes 
(MSc)contact: pedro.lo...@ist.utl.ptwebsite: 
http://web.ist.utl.pt/Pedro.Lopes 
/http://pedrolopesresearch.wordpress.com/ | 
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Re: [Sursound] Ambisonic Speakers what type to buy for 8 speaker setup

2011-05-06 Thread thomaschen
I believe that angle between speakers are important.  We will fuse 
angles of 60 degrees or less.  I have found that 45 degrees fuse well 
and most people are unable to locate speakers.  I also found that with 
height helps fuse the image.  I use B+ which adds a stereo front 
earlier in time plus B format.  The early time of arrival from the 
stereo front helps in both richness and localization.


ThomasChen


-Original Message-
From: Anthony Palomba apalo...@austin.rr.com
To: Surround Sound discussion group sursound@music.vt.edu
Sent: Thu, May 5, 2011 12:41 pm
Subject: Re: [Sursound] Ambisonic Speakers what type to buy for 8 
speaker setup



I am very interested in this as well. I have been thinking abouttaking 
the 3d audio plunge and would like to figure outwhat kind of setup I 
would need.I would also be interested in knowing what you guys areusing 
to do the encoding of the audio streams.AnthonyOn Thu, May 5, 2011 at 
12:46 PM, Pedro Lopes pedro.lo...@ist.utl.pt wrote: Hi everyone, 
Impressive setup you have there. I'm also building an 8 speaker 
ambisonic setup, although budget limitations will force me to buy 
something like YamahaHs50, KRK rokit, or Mackies... something in the 
150€ price range per speaker. ThomasChen do you use two octagons one 
above the other? I'm researching about my speaker positioning, and 
considering two quads (rectangles), one vertical and one horizontal. 
The goal is to provide a small space (3 by 3 meters) with 3D sound 
with ambisonics. Whats the general though on 8 speaker positioning? 
I attached an idea of the placing, for illustration purposes. best 
regards, Pedro On Thu, May 5, 2011 at 6:38 PM, thomasc...@aol.com 
wrote:  Darren   I am using a dual octagon setup with ambisonic 
plus stereo playback.   I  have custom decoder implemented in 
Scope--Soniccore.  I am using Genelec  speakers with larger for the 
front and small for the rear.  The addition of  powered speakers is 
that the addition gives much greater sound pressure.  The  
advantage of distributed sound sources is that the sound level is more 
 tolerable than from two.  They are in a 1000 sq. ft. room   
ThomasChenIn a message dated 5/5/2011 6:07:32 A.M. Pacific 
Daylight Time,  i...@sacredresonance.com.au writes:   Hi  Darren 
here,   I am doing a surround sound / octagon (8 speakers) setup  
using ambisonic  software to create immersive sound running out of 
M-aduio  firewire 410   I am wanting to do 30-80 people in a room 
I want to do  testing in house  and use for live setup as well -  
 what you think is  the cheapest option being 8 speakers.   1. 
What speakers should: (to  buy)   a) Monitors (near field) powered 
- would these work ? being near  field.   b) or just powered 
speakers.   Please any ideas of what to  buy with this setup   
thanks  Darren   -- next part  --  An 
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http://pedrolopesresearch.wordpress.com/ | 
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Re: [Sursound] Ambisonic Speakers what type to buy for 8 speaker setup

2011-05-05 Thread ThomasChen
Darren
 
I am using a dual octagon setup with ambisonic plus stereo playback.   I 
have custom decoder implemented in Scope--Soniccore.  I am using Genelec  
speakers with larger for the front and small for the rear.  The addition of  
powered speakers is that the addition gives much greater sound pressure.   The 
advantage of distributed sound sources is that the sound level is more  
tolerable than from two.  They are in a 1000 sq. ft. room
 
ThomasChen
 
 
In a message dated 5/5/2011 6:07:32 A.M. Pacific Daylight Time,  
i...@sacredresonance.com.au writes:

Hi  Darren here,

I am doing a surround sound / octagon (8 speakers) setup  using ambisonic 
software to create immersive sound running out of M-aduio  firewire 410

I am wanting to do 30-80 people in a room I want to do  testing in house 
and use for live setup as well - 

what you think is  the cheapest option being 8 speakers.

1. What speakers should: (to  buy)

a) Monitors (near field) powered - would these work ? being near  field.

b) or just powered speakers.

Please any ideas of what to  buy with this setup

thanks
Darren

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