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33 lines
1.8 KiB
33 lines
1.8 KiB
/*
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* Copyright (c) 2011-2019 Belledonne Communications SARL.
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*
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* This file is part of bcg729.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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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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