bb1a28de3c
- test_utils.h/.cc simplified - webrtc::rnnvad::test -> webrtc::rnnvad - all unit test code inside the anonymous namespace - names improved Bug: webrtc:10480 Change-Id: I0a0f056f9728bb8a1b93006b95d7ed5bf5bd4adb Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/196509 Commit-Queue: Alessio Bazzica <alessiob@webrtc.org> Reviewed-by: Sam Zackrisson <saza@webrtc.org> Cr-Commit-Position: refs/heads/master@{#32789}
42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
/*
|
|
* Copyright (c) 2018 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.
|
|
*/
|
|
|
|
#ifndef MODULES_AUDIO_PROCESSING_AGC2_RNN_VAD_LP_RESIDUAL_H_
|
|
#define MODULES_AUDIO_PROCESSING_AGC2_RNN_VAD_LP_RESIDUAL_H_
|
|
|
|
#include <stddef.h>
|
|
|
|
#include "api/array_view.h"
|
|
|
|
namespace webrtc {
|
|
namespace rnn_vad {
|
|
|
|
// Linear predictive coding (LPC) inverse filter length.
|
|
constexpr int kNumLpcCoefficients = 5;
|
|
|
|
// Given a frame |x|, computes a post-processed version of LPC coefficients
|
|
// tailored for pitch estimation.
|
|
void ComputeAndPostProcessLpcCoefficients(
|
|
rtc::ArrayView<const float> x,
|
|
rtc::ArrayView<float, kNumLpcCoefficients> lpc_coeffs);
|
|
|
|
// Computes the LP residual for the input frame |x| and the LPC coefficients
|
|
// |lpc_coeffs|. |y| and |x| can point to the same array for in-place
|
|
// computation.
|
|
void ComputeLpResidual(
|
|
rtc::ArrayView<const float, kNumLpcCoefficients> lpc_coeffs,
|
|
rtc::ArrayView<const float> x,
|
|
rtc::ArrayView<float> y);
|
|
|
|
} // namespace rnn_vad
|
|
} // namespace webrtc
|
|
|
|
#endif // MODULES_AUDIO_PROCESSING_AGC2_RNN_VAD_LP_RESIDUAL_H_
|