21 Sep
2011
21 Sep
'11
9:17 p.m.
Hi all,
I would like to announce a concert with low delay Ambisonics processing
of acoustic instruments, the signal processing using linux audio (many
components are written by Fons (ambdec, jconvolver) or based on code
from Fons and Jörn (panning methods)):
Harmony of the Spheres
Cosmology and Number Aesthetics in 16th and 20th century Music for Viola
da Gamba
Sunday, Sep. 25th, 4pm
Haus im Park, Züricher Str. 40
Bremen, Germany
You can find more information here:
http://www.orlandoviols.de/?dlink=0
Composers of the programme are Steve Reich, Arvo Pärt, John Cage, Lee
Santana, Christopher Tye, Nicholas Strogers and Mr. Picforth.
More concerts with this programme are scheduled and planned in December.
Sincerely,
Giso
(If you would like to hear this programme near your place, please
contact me off-list via info(a)orlandoviols.de)
22 Sep
22 Sep
3:43 a.m.
On Wed, Sep 21, 2011 at 09:17:42PM +0200, Giso Grimm wrote:
Hi all,
I would like to announce a concert with low delay Ambisonics processing
of acoustic instruments, the signal processing using linux audio (many
components are written by Fons (ambdec, jconvolver) or based on code
from Fons and J?rn (panning methods)):
Harmony of the Spheres
Cosmology and Number Aesthetics in 16th and 20th century Music for Viola
da Gamba
Sunday, Sep. 25th, 4pm
Haus im Park, Z?richer Str. 40
Bremen, Germany
You can find more information here:
http://www.orlandoviols.de/?dlink=0
Composers of the programme are Steve Reich, Arvo P?rt, John Cage, Lee
Santana, Christopher Tye, Nicholas Strogers and Mr. Picforth.
Any chance this will
be recorded and made available in some form or
other? I find it extremely intriguing, but am allas geographically
challenged. :)
Cheers,
S.M.
8:38 a.m.
New subject: Concert with low delay realtime linux audio spatial processing
On 09/22/2011 03:43 AM, S. Massy wrote:
On Wed, Sep 21, 2011 at 09:17:42PM +0200, Giso Grimm
wrote:
Hi,
I plan to record the microphone signals, from which I can then recreate
the Ambisonics mix. However, it is difficult to create a stereo downmix
of this (I tried a headphone downmix via dummy head HRTFs, which is fine
but don't allow you to turn your head, I don't think it is possible to
create acceptable loudspeaker downmixes). Publishing all recordings will
not be possible due to legal issues (many of the composers are still
alive, and the exploitation rights of some pieces are explicitly
restricted), but I will upload some examples afterwards.
It could be possible to make a life transmission of the Ambisonics
stream (not at this occasion, but at later ones) to an Ambisonics-setup
anywhere in the world.
Cheers,
Giso
[...] a concert with low delay Ambisonics
processing
of acoustic instruments, the signal processing using linux audio (many
components are written by Fons (ambdec, jconvolver) or based on code
from Fons and J?rn (panning methods)):
Harmony of the Spheres
Cosmology and Number Aesthetics in 16th and 20th century Music for Viola
da Gamba
Sunday, Sep. 25th, 4pm
Haus im Park, Z?richer Str. 40
Bremen, Germany
[...]
Any chance this will be recorded and made available in some form or
other? I find it extremely intriguing, but am allas geographically
challenged. :) 
5:01 p.m.
New subject: Concert with low delay realtime linux audio spatial processing
On Thu, Sep 22, 2011 at 08:38:16AM +0200, Giso Grimm wrote:
I plan to record the microphone signals, from which I
can then recreate
the Ambisonics mix. However, it is difficult to create a stereo downmix
of this (I tried a headphone downmix via dummy head HRTFs, which is fine
but don't allow you to turn your head, I don't think it is possible to
create acceptable loudspeaker downmixes).
You could try the virtual stereo mic in Tetraproc. Usually a pair of
hypercardioids at an angle of 120 degrees or so gives good results.
Of course you get some 'front preference', with back sources becoming
more reverberant. But that works better than trying to preserve
'uniform' covering of all directions in stereo.
Anyway, good luck with the concert !
Yesterday evening we had an 'electronic concert' in the Sala Bianca.
One of the pieces was produced at the LABEL (studio of la Casa della
Musica). It uses 38 (Ardour) tracks, spatialised into 3rd order AMB
in the studio. For the concert the panning data from the ambisonic
mixer were transferred to the 'WFS mixer' (which doesn't actually
mix the signals, it just controls the position of sources in the WFS
system), and the 38 tracks rendered individually. We could also
render the Ambisonic version using just 8 virtual speakers. Both
versions worked well. Those who heard both (before the concert)
preferred the WFS version.
Ciao,
--
FA
23 Sep
23 Sep
4:03 a.m.
On Thu, Sep 22, 2011 at 08:38:16AM +0200, Giso Grimm wrote:
On 09/22/2011 03:43 AM, S. Massy wrote:
Please keep us posted. I
am very interested in this kind of concept (and
I like the composers you list as well).
Cheers,
S.M.
On Wed, Sep 21, 2011 at 09:17:42PM +0200, Giso
Grimm wrote:
Hi,
I plan to record the microphone signals, from which I can then recreate
the Ambisonics mix. However, it is difficult to create a stereo downmix
of this (I tried a headphone downmix via dummy head HRTFs, which is fine
but don't allow you to turn your head, I don't think it is possible to
create acceptable loudspeaker downmixes). Publishing all recordings will
not be possible due to legal issues (many of the composers are still
alive, and the exploitation rights of some pieces are explicitly
restricted), but I will upload some examples afterwards. [...] a concert with low delay Ambisonics
processing
of acoustic instruments, the signal processing using linux audio (many
components are written by Fons (ambdec, jconvolver) or based on code
from Fons and J?rn (panning methods)):
Harmony of the Spheres
Cosmology and Number Aesthetics in 16th and 20th century Music for Viola
da Gamba
Sunday, Sep. 25th, 4pm
Haus im Park, Z?richer Str. 40
Bremen, Germany
[...]
Any chance this will be recorded and made available in some form or
other? I find it extremely intriguing, but am allas geographically
challenged. :) 
22 Sep
22 Sep
9:17 a.m.
New subject: Concert with low delay realtime linux audio spatial processing
Excerpts from Giso Grimm's message of 2011-09-21 21:17:42 +0200:
Hi all,
I would like to announce a concert with low delay Ambisonics processing
of acoustic instruments, the signal processing using linux audio (many
components are written by Fons (ambdec, jconvolver) or based on code
from Fons and Jörn (panning methods)):
Harmony of the Spheres
Cosmology and Number Aesthetics in 16th and 20th century Music for Viola
da Gamba
Sunday, Sep. 25th, 4pm
Haus im Park, Züricher Str. 40
Bremen, Germany
You can find more information here:
http://www.orlandoviols.de/?dlink=0
Composers of the programme are Steve Reich, Arvo Pärt, John Cage, Lee
Santana, Christopher Tye, Nicholas Strogers and Mr. Picforth.
More concerts with this programme are scheduled and planned in December.
Sincerely,
Giso
(If you would like to hear this programme near your place, please
contact me off-list via info(a)orlandoviols.de)
This sounds intriguing, but even if I'd start to hike today I wouldn't
make it in time. I'm a bit confused by the 'third order' as well, afaik
only first order and soundfield microphones exist.
9:37 a.m.
New subject: Concert with low delay realtime linux audio spatial processing
On 09/22/2011 09:17 AM, Philipp Überbacher wrote:
Excerpts from Giso Grimm's message of 2011-09-21
21:17:42 +0200:
We have five single channel signals (the instruments directly picked up
with close microphones), which we feed into a 3rd order horizontal
Ambisonics panner. To some extend we can code distance expression by
adding reverberant bits on a virtual stereo source coming from the same
direction as the source (dry/wet ratio and stereo width is distance
depending). All parameters can dynamically change; trajectories of the
virtual sources are designed to match the music.
- Giso
[...] a concert with low delay Ambisonics
processing
of acoustic instruments, the signal processing using linux audio (many
components are written by Fons (ambdec, jconvolver) or based on code
from Fons and Jörn (panning methods)):
Harmony of the Spheres
Cosmology and Number Aesthetics in 16th and 20th century Music for Viola
da Gamba
[...]
This sounds intriguing, but even if I'd start to hike today I wouldn't
make it in time. I'm a bit confused by the 'third order' as well, afaik
only first order and soundfield microphones exist.
4811
days inactive
4813
days old
linux-audio-user@lists.linuxaudio.org
6 comments
4 participants
participants (4)
-
Fons Adriaensen -
Giso Grimm -
Philipp Überbacher -
S. Massy