[LAU] Autotuner for Linux?

fons at kokkinizita.net fons at kokkinizita.net
Wed Nov 11 05:48:34 EST 2009

On Wed, Nov 11, 2009 at 08:48:50AM +0100, Atte André Jensen wrote:
> Rob wrote:
> > There's the Autotalent LADSPA plugin, but either its effects are a lot more 
> > subtle than Autotune or I'm way better of a singer than I thought I was.
> Nice. I just tested it, and it seems to work.
> However it's cpu usage rises to > 100% when theres a pause in the audio 
> input. Anyone else experience this?

In autotalent.c, changing line 560:

  psAutotalent->ffttime[ti] = psAutotalent->ffttime[ti] / psAutotalent->ffttime[0];


  psAutotalent->ffttime[ti] = psAutotalent->ffttime[ti] / (psAutotalent->ffttime[0] + 1e-10f);

should help.

I see one problem with this plugin: its period estimation is always
an integer number of samples, and this is introduces pitch errors
by itself ! It should be relatively easy to correct.



Io lo dico sempre: l'Italia è troppo stretta e lunga.

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