29 Jan
2005
29 Jan
'05
9:50 a.m.
On Sat, 29 Jan 2005 10:28:23 +0100
Fons Adriaensen <fons.adriaensen(a)skynet.be> wrote:
On Sat, Jan 29, 2005 at 12:14:49AM +0100, Florian
Schmidt wrote:
hmm, are a and b real and imag part of the FFT of the response for one
channel? otherwise i wouldn't see how a stereo response file would have
4 values.. care to elaborate some? I hacked this thing in 1 day [incl.
learning how convolution and partitioned convolution works - i actually
wondered: what takes longer: writing a convolution engine or grokking
brutefir's config files ;)], so i wouldn't be surprised if i made
fundamental mistakes.. OTOH it sounds quite good even now..
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, what you need is actually
| L' | | a b | | L |
| | = | | | |
| R' | | c d | | R |
where a, b, c, d are the responses to be convolved with.
In its present form, you code will do this if you split inputs
and recombine outputs, but only with a lot of redundant work.
It could be a good idea to have a more flexible I/O configuration
that would allow this.
as i don't grok the first part, i don't grok this either..
--
Palimm Palimm!
http://affenbande.org/~tapas/