bcec8b0b21
This is from the upstream library commit id 3326535126e435f1ba647885ce43a8f0f3d317eb, corresponding to Chromium 88.0.4290.1.
45 lines
2.0 KiB
C++
45 lines
2.0 KiB
C++
/*
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* Copyright (c) 2013 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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// This header file defines the coefficients of the FIR based approximation of
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// the Meyer Wavelet
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#ifndef MODULES_AUDIO_PROCESSING_TRANSIENT_DAUBECHIES_8_WAVELET_COEFFS_H_
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#define MODULES_AUDIO_PROCESSING_TRANSIENT_DAUBECHIES_8_WAVELET_COEFFS_H_
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// Decomposition coefficients Daubechies 8.
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namespace webrtc {
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const int kDaubechies8CoefficientsLength = 16;
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const float kDaubechies8HighPassCoefficients[kDaubechies8CoefficientsLength] = {
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-5.44158422430816093862e-02f, 3.12871590914465924627e-01f,
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-6.75630736298012846142e-01f, 5.85354683654869090148e-01f,
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1.58291052560238926228e-02f, -2.84015542962428091389e-01f,
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-4.72484573997972536787e-04f, 1.28747426620186011803e-01f,
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1.73693010020221083600e-02f, -4.40882539310647192377e-02f,
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-1.39810279170155156436e-02f, 8.74609404701565465445e-03f,
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4.87035299301066034600e-03f, -3.91740372995977108837e-04f,
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-6.75449405998556772109e-04f, -1.17476784002281916305e-04f};
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const float kDaubechies8LowPassCoefficients[kDaubechies8CoefficientsLength] = {
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-1.17476784002281916305e-04f, 6.75449405998556772109e-04f,
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-3.91740372995977108837e-04f, -4.87035299301066034600e-03f,
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8.74609404701565465445e-03f, 1.39810279170155156436e-02f,
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-4.40882539310647192377e-02f, -1.73693010020221083600e-02f,
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1.28747426620186011803e-01f, 4.72484573997972536787e-04f,
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-2.84015542962428091389e-01f, -1.58291052560238926228e-02f,
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5.85354683654869090148e-01f, 6.75630736298012846142e-01f,
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3.12871590914465924627e-01f, 5.44158422430816093862e-02f};
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_TRANSIENT_DAUBECHIES_8_WAVELET_COEFFS_H_
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