Subject: Re: [linux-audio-dev] Still I cannot understand why...
From: Jussi Laako (jussi.laako_AT_kolumbus.fi)
Date: Thu Dec 20 2001 - 21:06:33 EET
Paul Davis wrote:
>
> i don't believe its common practice to use FFT for real time EQ. its
> perfectly possible to use delay lines to accomplish high quality EQ
> with much lower latency than FFT. thats certainly what 90%+ of all
True, I know it's probably not the common practice and that's why I did it
using FFT... ;-)
FIR filtering done in complex plane (frequency domain) is much faster than
time-domain processing. I don't think it's easy to get 3th octave (31-band)
EQ or nice parametric eq to have low latency in any domain.
Anyway, there are various other reasons why it's done in complex plane.
Now I'm able to run such 8-channel eq at 96 kHz if needed.
- Jussi Laako
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