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Alternate tuning found using exp_tuning_knobs (disabled by default)

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This commit is contained in:
Jean-Marc Valin 2010-10-21 17:10:24 -04:00
parent 6bf15c55d8
commit 94491653e0
1 changed files with 29 additions and 1 deletions
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30
libcelt/modes.c
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@ -63,6 +63,34 @@ static const unsigned char band_allocation[] = {
255,255,224,224,224,224,224,224,224,192,192,192,192,192,192,192,192,192,192,192,120,
};
#else
#if 1
/* Alternate tuning based on exp_tuning_knobs from 2010/10/21:
87 5 25 14 300
120 5 25 16 400
125 5 25 17 500
130 5 24 18 600
130 5 24 19 920
140 7 24 20 1240
170 7 20 21 2000
120 5 20 21 4000
*/
#define BITALLOC_SIZE 9
/* Bit allocation table in units of 1/32 bit/sample (0.1875 dB SNR) */
static const unsigned char band_allocation[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
99, 99, 90, 84, 78, 71, 65, 58, 51, 45, 39, 32, 26, 20, 1, 0, 0, 0, 0, 0, 0,
124,124,109, 98, 88, 77, 71, 65, 59, 52, 46, 40, 34, 27, 21, 15, 1, 0, 0, 0, 0,
132,132,117,107, 97, 87, 80, 74, 68, 62, 55, 49, 43, 37, 30, 23, 17, 1, 1, 0, 0,
138,138,123,112,102, 91, 85, 79, 73, 67, 61, 55, 49, 43, 37, 31, 25, 19, 1, 0, 0,
152,152,139,130,120,110,104, 98, 92, 86, 80, 74, 68, 62, 56, 50, 44, 38, 32, 8, 0,
167,167,154,145,136,127,117,108,102, 96, 90, 84, 78, 72, 66, 60, 54, 48, 42, 36, 2,
215,215,194,180,165,151,137,121,116,111,106,101, 96, 91, 86, 81, 76, 71, 66, 61, 56,
240,240,239,233,225,218,211,203,198,193,188,183,178,173,168,163,158,153,148,143,138,
};
#else
/* Alternate tuning (partially derived from Vorbis) */
#define BITALLOC_SIZE 11
@ -80,7 +108,7 @@ static const unsigned char band_allocation[] = {
219,216,207,197,190,183,176,173,166,164,161,157,150,142,139,138,129,119,113,102, 80,
229,229,224,222,223,224,224,225,222,221,221,220,220,219,218,200,178,154,146,130,102,
};
#endif
#endif
#ifdef STATIC_MODES