Re: [Alsa-user] multichannel multiband FFT-based equalizer - README

[Sergei S. <ste...@li...>]

So, how are going to implement a central frequency which is
not a multiple of (Fs / N) in a DFT equalizer ?

That is, what data resulting from direct DFT represents such frequencies ?


On Mon, 2 Jan 2006 22:36:21 +0100
fons adriaensen <fon...@sk...> wrote:

> On Mon, Jan 02, 2006 at 07:58:57PM +0200, Sergei Steshenko wrote:
> 
> > The existence of spectral resolution prevents end user from having
> > arbitrary central band frequencies in DFT-based equalizers, central frequencies
> > can only be a multiple of spectral resolution.
> 
> Not true, you can have arbitrary central frequencies. You can even sweep them.
> But you can't have two independent bands that are closer than Fs/N (or more
> if windowing is taken into account).
> 
> -- 
> FA
> 
> 
>