From b409a4b0c6131e01fc5a03c0fc31caa4829b0dec Mon Sep 17 00:00:00 2001 From: Johnathan Corgan <jcorgan@corganenterprises.com> Date: Mon, 18 Jul 2011 15:54:43 -0700 Subject: gr-vocoder: re-implemented gr-codec2-vocoder inside gr-vocoder --- gr-vocoder/lib/codec2/quantise.h | 83 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 gr-vocoder/lib/codec2/quantise.h (limited to 'gr-vocoder/lib/codec2/quantise.h') diff --git a/gr-vocoder/lib/codec2/quantise.h b/gr-vocoder/lib/codec2/quantise.h new file mode 100644 index 0000000000..90a3661ffd --- /dev/null +++ b/gr-vocoder/lib/codec2/quantise.h @@ -0,0 +1,83 @@ +/*---------------------------------------------------------------------------*\ + + FILE........: quantise.h + AUTHOR......: David Rowe + DATE CREATED: 31/5/92 + + Quantisation functions for the sinusoidal coder. + +\*---------------------------------------------------------------------------*/ + +/* + 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 __QUANTISE__ +#define __QUANTISE__ + +#define WO_BITS 7 +#define WO_LEVELS (1<<WO_BITS) +#define E_BITS 5 +#define E_LEVELS (1<<E_BITS) +#define E_MIN_DB -10.0 +#define E_MAX_DB 40.0 + +void quantise_init(); +float lpc_model_amplitudes(float Sn[], float w[], MODEL *model, int order, + int lsp,float ak[]); +void aks_to_M2(float ak[], int order, MODEL *model, float E, float *snr, + int dump); + +int encode_Wo(float Wo); +float decode_Wo(int index); + +void encode_lsps(int indexes[], float lsp[], int order); +void decode_lsps(float lsp[], int indexes[], int order); +void lspd_quantise(float lsp[], float lsp_[], int order); +void lspdvq_quantise(float lsp[], float lsp_[], int order); + +int encode_energy(float e); +float decode_energy(int index); + +void encode_amplitudes(int lsp_indexes[], + int *energy_index, + MODEL *model, + float Sn[], + float w[]); + +float decode_amplitudes(MODEL *model, + float ak[], + int lsp_indexes[], + int energy_index, + float lsps[], + float *e); + +void pack(unsigned char * bits, unsigned int *nbit, int index, unsigned int index_bits); +int unpack(const unsigned char * bits, unsigned int *nbit, unsigned int index_bits); + +int lsp_bits(int i); + +void apply_lpc_correction(MODEL *model); +float speech_to_uq_lsps(float lsp[], + float ak[], + float Sn[], + float w[], + int order + ); +void bw_expand_lsps(float lsp[], + int order + ); +void decode_lsps(float lsp[], int indexes[], int order); + +#endif -- cgit v1.2.3