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35 lines
1.8 KiB
35 lines
1.8 KiB
/*
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postProcessing.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 POSTPROCESSING_H
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#define POSTPROCESSING_H
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void initPostProcessing(bcg729DecoderChannelContextStruct *decoderChannelContext);
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/*****************************************************************************/
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/* postProcessing : high pass filtering and upscaling Spec 4.2.5 */
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/* Algorithm: */
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/* y[i] = BO*x[i] + B1*x[i-1] + B2*x[i-2] + A1*y[i-1] + A2*y[i-2] */
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/* parameters: */
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/* -(i/o) decoderChannelContext : the channel context data */
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/* -(i/o) signal : 40 values in Q0, reconstructed speech, output */
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/* replaces the input in buffer */
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/* */
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/*****************************************************************************/
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void postProcessing(bcg729DecoderChannelContextStruct *decoderChannelContext, word16_t signal[]);
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#endif /* ifndef POSTPROCESSING_H */
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