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Diffstat (limited to 'thirdparty/libvorbis/barkmel.c')
-rw-r--r-- | thirdparty/libvorbis/barkmel.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/thirdparty/libvorbis/barkmel.c b/thirdparty/libvorbis/barkmel.c new file mode 100644 index 0000000000..37b6c4c7ba --- /dev/null +++ b/thirdparty/libvorbis/barkmel.c @@ -0,0 +1,64 @@ +/******************************************************************** + * * + * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. * + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * + * * + * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 * + * by the Xiph.Org Foundation http://www.xiph.org/ * + * * + ******************************************************************** + + function: bark scale utility + last mod: $Id: barkmel.c 19454 2015-03-02 22:39:28Z xiphmont $ + + ********************************************************************/ + +#include <stdio.h> +#include "scales.h" +int main(){ + int i; + double rate; + for(i=64;i<32000;i*=2){ + rate=48000.f; + fprintf(stderr,"rate=%gHz, block=%d, f(1)=%.2gHz bark(1)=%.2g (of %.2g)\n", + rate,i,rate/2 / (i/2),toBARK(rate/2 /(i/2)),toBARK(rate/2)); + + rate=44100.f; + fprintf(stderr,"rate=%gHz, block=%d, f(1)=%.2gHz bark(1)=%.2g (of %.2g)\n", + rate,i,rate/2 / (i/2),toBARK(rate/2 /(i/2)),toBARK(rate/2)); + + rate=32000.f; + fprintf(stderr,"rate=%gHz, block=%d, f(1)=%.2gHz bark(1)=%.2g (of %.2g)\n", + rate,i,rate/2 / (i/2),toBARK(rate/2 /(i/2)),toBARK(rate/2)); + + rate=22050.f; + fprintf(stderr,"rate=%gHz, block=%d, f(1)=%.2gHz bark(1)=%.2g (of %.2g)\n", + rate,i,rate/2 / (i/2),toBARK(rate/2 /(i/2)),toBARK(rate/2)); + + rate=16000.f; + fprintf(stderr,"rate=%gHz, block=%d, f(1)=%.2gHz bark(1)=%.2g (of %.2g)\n", + rate,i,rate/2 / (i/2),toBARK(rate/2 /(i/2)),toBARK(rate/2)); + + rate=11025.f; + fprintf(stderr,"rate=%gHz, block=%d, f(1)=%.2gHz bark(1)=%.2g (of %.2g)\n", + rate,i,rate/2 / (i/2),toBARK(rate/2 /(i/2)),toBARK(rate/2)); + + rate=8000.f; + fprintf(stderr,"rate=%gHz, block=%d, f(1)=%.2gHz bark(1)=%.2g (of %.2g)\n\n", + rate,i,rate/2 / (i/2),toBARK(rate/2 /(i/2)),toBARK(rate/2)); + + + } + { + float i; + int j; + for(i=0.,j=0;i<28;i+=1,j++){ + fprintf(stderr,"(%d) bark=%f %gHz (%d of 128)\n", + j,i,fromBARK(i),(int)(fromBARK(i)/22050.*128.)); + } + } + return(0); +} + |