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Diffstat (limited to 'third_party/libwebrtc/modules/audio_processing/transient/daubechies_8_wavelet_coeffs.h')
-rw-r--r-- | third_party/libwebrtc/modules/audio_processing/transient/daubechies_8_wavelet_coeffs.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/audio_processing/transient/daubechies_8_wavelet_coeffs.h b/third_party/libwebrtc/modules/audio_processing/transient/daubechies_8_wavelet_coeffs.h new file mode 100644 index 0000000000..92233bfd74 --- /dev/null +++ b/third_party/libwebrtc/modules/audio_processing/transient/daubechies_8_wavelet_coeffs.h @@ -0,0 +1,44 @@ +/* + * 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_ |