42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/*
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* This function mixes a voiced signal with an unvoiced signal and
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* updates the weight on a sample by sample basis.
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*/
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#include "dsp_helpfunctions.h"
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#include "signal_processing_library.h"
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void WebRtcNetEQ_MixVoiceUnvoice(WebRtc_Word16 *pw16_outData, WebRtc_Word16 *pw16_voicedVec,
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WebRtc_Word16 *pw16_unvoicedVec,
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WebRtc_Word16 *w16_current_vfraction,
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WebRtc_Word16 w16_vfraction_change, WebRtc_Word16 N)
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{
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int i;
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WebRtc_Word16 w16_tmp2;
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WebRtc_Word16 vfraction = *w16_current_vfraction;
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w16_tmp2 = 16384 - vfraction;
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for (i = 0; i < N; i++)
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{
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pw16_outData[i] = (WebRtc_Word16) WEBRTC_SPL_RSHIFT_W32(
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WEBRTC_SPL_MUL_16_16(vfraction, pw16_voicedVec[i]) +
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WEBRTC_SPL_MUL_16_16(w16_tmp2, pw16_unvoicedVec[i]) + 8192,
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14);
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vfraction -= w16_vfraction_change;
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w16_tmp2 += w16_vfraction_change;
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}
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*w16_current_vfraction = vfraction;
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}
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