ref: 94491653e0f0d0c9b1ce4c5da321b4799cccf060
parent: 6bf15c55d893149fef044e6a6e6b3cae6f53b3e1
author: Jean-Marc Valin <[email protected]>
date: Thu Oct 21 13:10:24 EDT 2010
Alternate tuning found using exp_tuning_knobs (disabled by default)
--- a/libcelt/modes.c
+++ b/libcelt/modes.c
@@ -64,6 +64,34 @@
};
#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
/* Bit allocation table in units of 1/32 bit/sample (0.1875 dB SNR) */
@@ -80,7 +108,7 @@
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