[LAD] Ladspa plugin invisible

[Ken Schutte]

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 
http://en.wikipedia.org/wiki/Goertzel_algorithm).

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.

Ken