[Jackit-devel] Re: [linux-audio-dev] [ANNOUNCE] jack_convolve-0.0.1

Alfons Adriaensen fons.adriaensen at alcatel.be
Mon Jan 31 10:02:59 UTC 2005


On Mon, Jan 31, 2005 at 09:51:55AM +0000, 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 and trying to figure out how to divide the
> > > computation into relatively equal parts.
> > 
> > For Jamin, you have two channels, each one needs a Fwd and an Inv FFT,
> > so that would already be 4 approx. equal parts (assuming the FFT dominates
> > the work to be done).
> 
> Actually there is on fwd, and 3 inv per channel, each xover band is a
> seperate inv FFT.

So that should enable you to divide the work into 8 pieces.
(down to period_size 32 already, and counting...)

-- 
FA







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