chromium/third_party/webrtc/modules/audio_processing/agc2/rnn_vad/features_extraction.cc

/*
 *  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.
 */

#include "modules/audio_processing/agc2/rnn_vad/features_extraction.h"

#include <array>

#include "modules/audio_processing/agc2/rnn_vad/lp_residual.h"
#include "rtc_base/checks.h"

namespace webrtc {
namespace rnn_vad {
namespace {

// Computed as `scipy.signal.butter(N=2, Wn=60/24000, btype='highpass')`.
constexpr BiQuadFilter::Config kHpfConfig24k{ … };

}  // namespace

FeaturesExtractor::FeaturesExtractor(const AvailableCpuFeatures& cpu_features)
    : … { … }

FeaturesExtractor::~FeaturesExtractor() = default;

void FeaturesExtractor::Reset() { … }

bool FeaturesExtractor::CheckSilenceComputeFeatures(
    rtc::ArrayView<const float, kFrameSize10ms24kHz> samples,
    rtc::ArrayView<float, kFeatureVectorSize> feature_vector) { … }

}  // namespace rnn_vad
}  // namespace webrtc