FreeCalypso > hg > gsm-codec-lib
view libgsmefr/cnst.h @ 127:4af99bf8671a
doc/EFR-rationale: add future roadmap section
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 11 Dec 2022 03:25:21 +0000 |
parents | f9c9dd458d55 |
children |
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/*--------------------------------------------------------------------------* * Codec constant parameters (coder, decoder, and postfilter) * *---------------------------------------------------------------------------*/ #define L_TOTAL 320 /* Total size of speech buffer. */ #define L_WINDOW 240 /* Window size in LP analysis */ #define L_FRAME 160 /* Frame size */ #define L_FRAME_BY2 80 /* Frame size divided by 2 */ #define L_SUBFR 40 /* Subframe size */ #define M 10 /* Order of LP filter */ #define MP1 (M+1) /* Order of LP filter + 1 */ #define AZ_SIZE (4*M+4) /* Size of array of LP filters in 4 subfr.s */ #define PIT_MIN 18 /* Minimum pitch lag */ #define PIT_MAX 143 /* Maximum pitch lag */ #define L_INTERPOL (10+1) /* Length of filter for interpolation */ #define PRM_SIZE 57 /* Size of vector of analysis parameters */ #define MU 26214 /* Factor for tilt compensation filter 0.8 */ #define AGC_FAC 29491 /* Factor for automatic gain control 0.9 */ #define DTX_HANGOVER 7 /* Period when SP=1 although VAD=0. Used for comfort noise averaging */