[LAD] Ladspa plugin invisible

Ken Schutte kschutte at csail.mit.edu
Fri Nov 30 21:16:52 UTC 2007

Rémi Thébault wrote:
> By the way, for the moment I use FFTW for the frequency identification.
> Is there a way to identify a frequency with quite high precision without
> computing a big spectrum analysis ?

You might want to look at the Goertzel algorithm (see a DSP book or 

Note, this doesn't effect how big of a window you need to resolve a 
particular frequency.  But, if you want to compute a big FFT, but will 
only be looking at a relatively small subset of the freq bins it 
outputs, then this can be more efficient.


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