Re: Re: [Protux-devel] No more FFTW

[Luciano Giordana]

I guess no. For snap-to-zero, it is just a simple search on the wave for a 
zero-cross.


On Tuesday 03 September 2002 03:53, Reinhard Amersberger wrote:
> Just a question:
> Is this kind of algorithm also helpful to offer the work_cursor's 'snap to
> zero' functionallity?
>
> Reinhard
>
> > I Know, I am still improving it, but the main part is that now I can
> > apply better  some HPS algorithm to find the pitch of what is being
> > played/recorded. It is the first step for SharpSing filter.
> >
> > On Monday 02 September 2002 04:33, Reinhard Amersberger wrote:
> > > > Guess what ? I found a public-domain FFT implementation in C, I made
> > > > some hacks and now it seems to be faster that FFTW calls (when
> > > > optimized for a spectrum analisys in MustuxFFT class).
> > >
> > > Sometimes TOO FAST? ;-)
> > > Because there is graphical activity before a clip is touched by the
> > > float_cursor ..... (just kidding! :-)
> > >
> > > But actually (1. aug 2002) the float_cursor is pretty in sync with the
> > > peaks!
> > >
> > > Just for info:
> > > Mute a Track has no effect on the spectrogram output.
> > > Only muting clips is working.
> > > I mean ... the spectrogram use the audio data of a Track (the Clips)
> > > even if this Track is muted.
> > >
> > > greetings
> > > Reinhard
> > >
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