1 /* 2 ** Copyright 2003-2010, VisualOn, Inc. 3 ** 4 ** Licensed under the Apache License, Version 2.0 (the "License"); 5 ** you may not use this file except in compliance with the License. 6 ** You may obtain a copy of the License at 7 ** 8 ** http://www.apache.org/licenses/LICENSE-2.0 9 ** 10 ** Unless required by applicable law or agreed to in writing, software 11 ** distributed under the License is distributed on an "AS IS" BASIS, 12 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 ** See the License for the specific language governing permissions and 14 ** limitations under the License. 15 */ 16 17 18 /*--------------------------------------------------------------------------* 19 * CNST.H * 20 *--------------------------------------------------------------------------* 21 * Codec constant parameters (coder and decoder) * 22 *--------------------------------------------------------------------------*/ 23 24 #ifndef __CNST_H__ 25 #define __CNST_H__ 26 27 #define L_FRAME16k 320 /* Frame size at 16kHz */ 28 #define L_FRAME 256 /* Frame size */ 29 #define L_SUBFR16k 80 /* Subframe size at 16kHz */ 30 31 #define L_SUBFR 64 /* Subframe size */ 32 #define NB_SUBFR 4 /* Number of subframe per frame */ 33 34 #define L_NEXT 64 /* Overhead in LP analysis */ 35 #define L_WINDOW 384 /* window size in LP analysis */ 36 #define L_TOTAL 384 /* Total size of speech buffer. */ 37 #define M 16 /* Order of LP filter */ 38 #define M16k 20 39 40 #define L_FILT16k 15 /* Delay of down-sampling filter */ 41 #define L_FILT 12 /* Delay of up-sampling filter */ 42 43 #define GP_CLIP 15565 /* Pitch gain clipping = 0.95 Q14 */ 44 #define PIT_SHARP 27853 /* pitch sharpening factor = 0.85 Q15 */ 45 46 #define PIT_MIN 34 /* Minimum pitch lag with resolution 1/4 */ 47 #define PIT_FR2 128 /* Minimum pitch lag with resolution 1/2 */ 48 #define PIT_FR1_9b 160 /* Minimum pitch lag with resolution 1 */ 49 #define PIT_FR1_8b 92 /* Minimum pitch lag with resolution 1 */ 50 #define PIT_MAX 231 /* Maximum pitch lag */ 51 #define L_INTERPOL (16+1) /* Length of filter for interpolation */ 52 53 #define OPL_DECIM 2 /* Decimation in open-loop pitch analysis */ 54 55 #define PREEMPH_FAC 22282 /* preemphasis factor (0.68 in Q15) */ 56 #define GAMMA1 30147 /* Weighting factor (numerator) (0.92 in Q15) */ 57 #define TILT_FAC 22282 /* tilt factor (denominator) (0.68 in Q15) */ 58 59 #define Q_MAX 8 /* scaling max for signal (see syn_filt_32) */ 60 61 #define RANDOM_INITSEED 21845 /* own random init value */ 62 63 #define L_MEANBUF 3 64 #define ONE_PER_MEANBUF 10923 65 66 #define MODE_7k 0 67 #define MODE_9k 1 68 #define MODE_12k 2 69 #define MODE_14k 3 70 #define MODE_16k 4 71 #define MODE_18k 5 72 #define MODE_20k 6 73 #define MODE_23k 7 74 #define MODE_24k 8 75 #define MRDTX 9 76 #define NUM_OF_MODES 10 /* see bits.h for bits definition */ 77 78 #define EHF_MASK (Word16)0x0008 /* homing frame pattern */ 79 80 #endif //__CNST_H__ 81 82
