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34 lines
1.8 KiB
34 lines
1.8 KiB
/*
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LPSynthesisFilter.h
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Copyright (C) 2011 Belledonne Communications, Grenoble, France
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Author : Johan Pascal
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef LPSYNTHESISFILTER_H
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#define LPSYNTHESISFILTER_H
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/*****************************************************************************/
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/* LPSynthesisFilter : as decribed in spec 4.1.6 eq77 */
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/* parameters: */
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/* -(i) excitationVector: u(n), the excitation, 40 values in Q0 */
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/* -(i) LPCoefficients: 10 LP coefficients in Q12 */
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/* -(i/o) recontructedSpeech: 50 values in Q0 */
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/* [-NB_LSP_COEFF, -1] of previous values as input */
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/* [0, L_SUBFRAME[ as output */
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/* */
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/*****************************************************************************/
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void LPSynthesisFilter (word16_t *excitationVector, word16_t *LPCoefficients, word16_t *reconstructedSpeech);
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#endif /* ifndef LPSYNTHESISFILTER_H */
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