/* * Copyright (c) 2011-2019 Belledonne Communications SARL. * * This file is part of bcg729. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * 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 General Public License * along with this program. If not, see . */ #ifndef POSTPROCESSING_H #define POSTPROCESSING_H void initPostProcessing(bcg729DecoderChannelContextStruct *decoderChannelContext); /*****************************************************************************/ /* postProcessing : high pass filtering and upscaling Spec 4.2.5 */ /* Algorithm: */ /* y[i] = BO*x[i] + B1*x[i-1] + B2*x[i-2] + A1*y[i-1] + A2*y[i-2] */ /* parameters: */ /* -(i/o) decoderChannelContext : the channel context data */ /* -(i/o) signal : 40 values in Q0, reconstructed speech, output */ /* replaces the input in buffer */ /* */ /*****************************************************************************/ void postProcessing(bcg729DecoderChannelContextStruct *decoderChannelContext, word16_t signal[]); #endif /* ifndef POSTPROCESSING_H */