[pulseaudio-discuss] Fwd: Pulse Audio Sample Cache & resampling

Erik de Castro Lopo mle+la at mega-nerd.com
Wed Feb 14 11:55:18 PST 2007

Erik de Castro Lopo wrote:

> I've done some testing and for resampling 8 seconds of float data
> from 96kHz to 44.1kHz I measured the following times:

I've just updated my figures:

   Speex resampler quality 5  : 0m0.611s
   Speex resampler quality 10 : 0m2.663s
   SRC fastest Sinc           : 0m0.562s
   SRC medium Sinc            : 0m1.124s
   SRC best Sinc              : 0m3.773s

> I've got some preliminary spectrograms here:

And now provide separate spectrograms for the speex resampler at
quality 5 and 10:


>     http://www.mega-nerd.com/tmp/SRC_best_sinc.png
>     http://www.mega-nerd.com/tmp/SRC_medium_sinc.png
>     http://www.mega-nerd.com/tmp/SRC_fastest_sinc.png

  Erik de Castro Lopo
"Nearly a third of British Muslims, 32 per cent, are far more censorious,
believing that "Western society is decadent and immoral and that Muslims
should seek to bring it to an end"."
-- http://www.telegraph.co.uk/news/main.jhtml?xml=/news/2005/07/23/npoll23.xml

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