On Sun, Jan 30, 2005 at 06:55:45PM -0600, Jack O'Quin wrote:
In the case of JAMin it was dictated by our desire to use FFTW rather
than writing our own FFT and trying to figure out how to divide the
computation into relatively equal parts.
For Jamin, you have two channels, each one needs a
On Mon, Jan 31, 2005 at 10:15:56 +0100, Alfons Adriaensen wrote:
On Sun, Jan 30, 2005 at 06:55:45PM -0600, Jack O'Quin wrote:
In the case of JAMin it was dictated by our desire to use FFTW rather
than writing our own FFT and trying to figure out how to divide the
computation into
On Mon, Jan 31, 2005 at 09:51:55AM +, Steve Harris wrote:
On Mon, Jan 31, 2005 at 10:15:56 +0100, Alfons Adriaensen wrote:
On Sun, Jan 30, 2005 at 06:55:45PM -0600, Jack O'Quin wrote:
In the case of JAMin it was dictated by our desire to use FFTW rather
than writing our own FFT
Florian Schmidt [EMAIL PROTECTED] writes:
forgot an important one:
- decouple the partitioned convolution chunk size from the jack buffer
size. This will allow to run a 2048 frames chunk sized partitioned
convolution in a i.e. 256 frames jack graph. Of course the latency of
the chunksize
On Sun, Jan 30, 2005 at 10:23:29AM -0600, Jack O'Quin wrote:
One simple improvement I'd recommend. JAMin runs its DSP thread at a
RT priority one less than the JACK process thread. It would be better
to add (log2(bufsize)-log2(chunksize)) to the JACK priority (only when
negative). Then,
Fons Adriaensen [EMAIL PROTECTED] writes:
On Sun, Jan 30, 2005 at 10:23:29AM -0600, Jack O'Quin wrote:
One simple improvement I'd recommend. JAMin runs its DSP thread at a
RT priority one less than the JACK process thread. It would be better
to add (log2(bufsize)-log2(chunksize)) to the
On Sat, 29 Jan 2005 18:20:02 +0100
Florian Schmidt [EMAIL PROTECTED] wrote:
Btw: All help appreciated. So if anyone wants to join in, feel free
Hi,
Ok, i reworked the code as library (reimplemented in C, too, instead of
C++). It _should_ support several response files each providing one
input
On Sat, Jan 29, 2005 at 12:14:49AM +0100, Florian Schmidt wrote:
So there's plenty room for optimization (and some return value checking
will be added too ;)).. If you know some tricks, let me know.. The
sourcecode is pasted below for easier reference.
For a typcal stereo room simulation,
On Sat, 29 Jan 2005 10:28:23 +0100
Fons Adriaensen [EMAIL PROTECTED] wrote:
On Sat, Jan 29, 2005 at 12:14:49AM +0100, Florian Schmidt wrote:
So there's plenty room for optimization (and some return value checking
will be added too ;)).. If you know some tricks, let me know.. The
On Sat, 29 Jan 2005 10:28:23 +0100
Fons Adriaensen [EMAIL PROTECTED] wrote:
On Sat, Jan 29, 2005 at 12:14:49AM +0100, Florian Schmidt wrote:
So there's plenty room for optimization (and some return value checking
will be added too ;)).. If you know some tricks, let me know.. The
On Sat, Jan 29, 2005 at 03:43:46PM +0100, Florian Schmidt wrote:
Now i grok it.
As a stereo impulse file is a response to a mono impulse placed
somewhere in the room, one needs two stereo response files with the
impulses created at different points in the room.
Yep, that's it. Even for a
oops, sent to fons only.. here's the mail to the lists, too. sorry for
duplicate, fons:
On Sat, 29 Jan 2005 16:16:04 +0100
Fons Adriaensen [EMAIL PROTECTED] wrote:
On Sat, Jan 29, 2005 at 03:43:46PM +0100, Florian Schmidt wrote:
Now i grok it.
As a stereo impulse file is a response to
On Sat, 29 Jan 2005 16:16:04 +0100
Fons Adriaensen [EMAIL PROTECTED] wrote:
Yep, that's it. Even for a stereo output, you could have more than
two inputs, each one corresponding to one place in the room.
Hmm, i still find it interesting though that convolving each channel of
for example a
On Sat, 29 Jan 2005 16:57:04 +0100
Florian Schmidt [EMAIL PROTECTED] wrote:
- fix error checking
- add multiple response file support as explained above
- add libsamplerate supprt for converting response files to jack samplerate
- optimize the complex multiplication
forgot an important one:
Hi,
i implemented a small convolution engine for jack.. grab it at
http://affenbande.org/~tapas/jack_convolve-0.0.1.tgz
untar
make
./jack_convolve responsefile.wav
It creates as many in/out ports as the response file has channels. Uses
fftw3f and libsndfile. Will add libsamplerate support in
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