Source code
Revision control
Copy as Markdown
Other Tools
/*
* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
// This header file defines the coefficients of the FIR based approximation of
// the Meyer Wavelet
#ifndef MODULES_AUDIO_PROCESSING_TRANSIENT_DAUBECHIES_8_WAVELET_COEFFS_H_
#define MODULES_AUDIO_PROCESSING_TRANSIENT_DAUBECHIES_8_WAVELET_COEFFS_H_
// Decomposition coefficients Daubechies 8.
namespace webrtc {
const int kDaubechies8CoefficientsLength = 16;
const float kDaubechies8HighPassCoefficients[kDaubechies8CoefficientsLength] = {
-5.44158422430816093862e-02f, 3.12871590914465924627e-01f,
-6.75630736298012846142e-01f, 5.85354683654869090148e-01f,
1.58291052560238926228e-02f, -2.84015542962428091389e-01f,
-4.72484573997972536787e-04f, 1.28747426620186011803e-01f,
1.73693010020221083600e-02f, -4.40882539310647192377e-02f,
-1.39810279170155156436e-02f, 8.74609404701565465445e-03f,
4.87035299301066034600e-03f, -3.91740372995977108837e-04f,
-6.75449405998556772109e-04f, -1.17476784002281916305e-04f};
const float kDaubechies8LowPassCoefficients[kDaubechies8CoefficientsLength] = {
-1.17476784002281916305e-04f, 6.75449405998556772109e-04f,
-3.91740372995977108837e-04f, -4.87035299301066034600e-03f,
8.74609404701565465445e-03f, 1.39810279170155156436e-02f,
-4.40882539310647192377e-02f, -1.73693010020221083600e-02f,
1.28747426620186011803e-01f, 4.72484573997972536787e-04f,
-2.84015542962428091389e-01f, -1.58291052560238926228e-02f,
5.85354683654869090148e-01f, 6.75630736298012846142e-01f,
3.12871590914465924627e-01f, 5.44158422430816093862e-02f};
} // namespace webrtc
#endif // MODULES_AUDIO_PROCESSING_TRANSIENT_DAUBECHIES_8_WAVELET_COEFFS_H_