[linux-audio-user] extreme time stretching

Eric Dantan Rzewnicki rzewnickie at rfa.org
Tue Mar 16 12:05:25 EST 2004

On Tue, Mar 16, 2004 at 05:25:30PM +1100, Erik de Castro Lopo wrote:
> On Mon, 15 Mar 2004 23:09:22 -0500
> Eric Dantan Rzewnicki <eric at zhevny.com> wrote:
> > If you compile 
> > ecasound with SRC support the shift is limited to 12x in either 
> > direction.
> That was true for SRC up to and including 0.0.15. For version 0.1.0
> released a couple of days ago, that has changed to +/- 256.

That's excellent news. :) thank you very much. I'll rebuild my ecasound
later this week. http://www.mega-nerd.com/SRC/index.html still refers to
the 12x limit. 

> Also, be aware that this is not a pitch shift effect, because the
> durartion is not constant. The effect is more accurately described
> as a vari-speed effect.

I see. That makes sense.

> If the internal ecasound on is linear or polynomial interpolation,
> then that would make a lot of sense.

What does SRC use?

-Eric Rz.

More information about the Linux-audio-user mailing list