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Diffstat (limited to 'gr-vocoder/lib/codec2/defines.h')
| -rw-r--r-- | gr-vocoder/lib/codec2/defines.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/gr-vocoder/lib/codec2/defines.h b/gr-vocoder/lib/codec2/defines.h new file mode 100644 index 000000000..2dcd527d3 --- /dev/null +++ b/gr-vocoder/lib/codec2/defines.h @@ -0,0 +1,88 @@ +/*---------------------------------------------------------------------------*\ + + FILE........: defines.h + AUTHOR......: David Rowe + DATE CREATED: 23/4/93 + + Defines and structures used throughout the codec. + +\*---------------------------------------------------------------------------*/ + +/* + Copyright (C) 2009 David Rowe + + All rights reserved. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License version 2.1, as + published by the Free Software Foundation. This program is + distributed in the hope that it will be useful, but WITHOUT ANY + WARRANTY; without even the implied warranty of MERCHANTABILITY or + FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public + License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program; if not, see <http://www.gnu.org/licenses/>. +*/ + +#ifndef __DEFINES__ +#define __DEFINES__ + +/*---------------------------------------------------------------------------*\ + + DEFINES + +\*---------------------------------------------------------------------------*/ + +/* General defines */ + +#define N 80 /* number of samples per frame */ +#define MAX_AMP 80 /* maximum number of harmonics */ +#define PI 3.141592654 /* mathematical constant */ +#define TWO_PI 6.283185307 /* mathematical constant */ +#define FS 8000 /* sample rate in Hz */ +#define MAX_STR 256 /* maximum string size */ + +#define NW 279 /* analysis window size */ +#define FFT_ENC 512 /* size of FFT used for encoder */ +#define FFT_DEC 512 /* size of FFT used in decoder */ +#define TW 40 /* Trapezoidal synthesis window overlap */ +#define V_THRESH 6.0 /* voicing threshold in dB */ +#define LPC_MAX 20 /* maximum LPC order */ +#define LPC_ORD 10 /* phase modelling LPC order */ + +/* Pitch estimation defines */ + +#define M 320 /* pitch analysis frame size */ +#define P_MIN 20 /* minimum pitch */ +#define P_MAX 160 /* maximum pitch */ + +/*---------------------------------------------------------------------------*\ + + TYPEDEFS + +\*---------------------------------------------------------------------------*/ + +/* Structure to hold model parameters for one frame */ + +typedef struct { + float Wo; /* fundamental frequency estimate in radians */ + int L; /* number of harmonics */ + float A[MAX_AMP]; /* amplitiude of each harmonic */ + float phi[MAX_AMP]; /* phase of each harmonic */ + int voiced; /* non-zero if this frame is voiced */ +} MODEL; + +/* describes each codebook */ + +struct lsp_codebook { + int k; /* dimension of vector */ + int log2m; /* number of bits in m */ + int m; /* elements in codebook */ + const float * cb; /* The elements */ +}; +extern const struct lsp_codebook lsp_cb[]; +extern const struct lsp_codebook lsp_cbd[]; +extern const struct lsp_codebook lsp_cbdvq[]; + +#endif |