ref: 0fa7b89f354773ce830f6bda12c8c27d2ad8b1d9
dir: /amr-wb/cnst.h/
/*--------------------------------------------------------------------------* * CNST.H * *--------------------------------------------------------------------------* * Codec constant parameters (coder and decoder) * *--------------------------------------------------------------------------*/ #define CODEC_VERSION "6.1.0" #define L_FRAME16k 320 /* Frame size at 16kHz */ #define L_FRAME 256 /* Frame size */ #define L_SUBFR16k 80 /* Subframe size at 16kHz */ #define L_SUBFR 64 /* Subframe size */ #define NB_SUBFR 4 /* Number of subframe per frame */ #define L_NEXT 64 /* Overhead in LP analysis */ #define L_WINDOW 384 /* window size in LP analysis */ #define L_TOTAL 384 /* Total size of speech buffer. */ #define M 16 /* Order of LP filter */ #define M16k 20 #define L_FILT16k 15 /* Delay of down-sampling filter */ #define L_FILT 12 /* Delay of up-sampling filter */ #define GP_CLIP 15565 /* Pitch gain clipping = 0.95 Q14 */ #define PIT_SHARP 27853 /* pitch sharpening factor = 0.85 Q15 */ #define PIT_MIN 34 /* Minimum pitch lag with resolution 1/4 */ #define PIT_FR2 128 /* Minimum pitch lag with resolution 1/2 */ #define PIT_FR1_9b 160 /* Minimum pitch lag with resolution 1 */ #define PIT_FR1_8b 92 /* Minimum pitch lag with resolution 1 */ #define PIT_MAX 231 /* Maximum pitch lag */ #define L_INTERPOL (16+1) /* Length of filter for interpolation */ #define OPL_DECIM 2 /* Decimation in open-loop pitch analysis */ #define PREEMPH_FAC 22282 /* preemphasis factor (0.68 in Q15) */ #define GAMMA1 30147 /* Weighting factor (numerator) (0.92 in Q15) */ #define TILT_FAC 22282 /* tilt factor (denominator) (0.68 in Q15) */ #define Q_MAX 8 /* scaling max for signal (see syn_filt_32) */ #define RANDOM_INITSEED 21845 /* own random init value */ #define L_MEANBUF 3 #define ONE_PER_MEANBUF 10923 #define MODE_7k 0 #define MODE_9k 1 #define MODE_12k 2 #define MODE_14k 3 #define MODE_16k 4 #define MODE_18k 5 #define MODE_20k 6 #define MODE_23k 7 #define MODE_24k 8 #define MRDTX 9 #define NUM_OF_MODES 10 /* see bits.h for bits definition */ #define EHF_MASK (Word16)0x0008 /* homing frame pattern */