ref: 95c59ea6476d369d544a30feebca5dff3344af56
parent: 2c53c149045cafb4114f5e04dac0948fa22e41db
author: Jean-Marc Valin <[email protected]>
date: Tue Jan 8 11:22:37 EST 2008
Updated the 18-band mode (mode0) to use the low-overlap MDCT
--- a/libcelt/modes.c
+++ b/libcelt/modes.c
@@ -33,7 +33,7 @@
#define NBANDS 18
#define PBANDS 8
-#define PITCH_END 37
+#define PITCH_END 74
#define NBANDS128 15
#define PBANDS128 8
@@ -57,10 +57,10 @@
14800, 13800, 12600, 12000, 11000, 11000, 10000, 10000, 9800, 8400, 8400, 8000, 7500, 7000, 7000, 7000, 6000, 6000
};
-const int qbank0[NBANDS +2] = {0, 2, 4, 6, 8, 10, 12, 14, 16, 19, 22, 26, 31, 37, 45, 56, 71, 91, 116, 128};-const int pbank0[PBANDS +2] = {0, 2, 4, 6, 8, 12, 19, 31, PITCH_END, 128};+const int qbank0[NBANDS +2] = {0, 4, 8, 12, 16, 20, 24, 28, 32, 38, 44, 52, 62, 74, 90,112,142,182, 232,256};+const int pbank0[PBANDS +2] = {0, 4, 8, 12, 16, 24, 38, 62, PITCH_END, 256}; //const int pbank0[PBANDS +2] = {0, 4, 8, 12, 19, PITCH_END, 128};-const int qpulses0[NBANDS ] = {7, 5, 5, 4, 4, 3, 3, 2, 3, 2, 2, 2, 2, 1, 0, 0, 0, 0};+const int qpulses0[NBANDS ] = {7, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 0, 0, 0, 0}; //const int qpulses0[NBANDS ] = {7, 5, 5, 5, 4, 4, 3, 3, 3, 3, 4, 3, 3, -2, 0, 0, 0, 0};@@ -83,8 +83,8 @@
const CELTMode mode0 = {128, /**< overlap */
- 128, /**< mdctSize */
- 2, /**< nbMdctBlocks */
+ 256, /**< mdctSize */
+ 1, /**< nbMdctBlocks */
1, /**< channels */
NBANDS, /**< nbEBands */