3f17221d98
In this CL: - Render signal analyzer considers a frequency bin a narrow band (peak) if any channel exhibits narrowband (-peak) behavior. - The unit tests have to fill frames with noise because small inaccuracies in the FFT spectrum lead to consistent "narrow bands" despite spectrum being essentially flat. Bug: webrtc:10913 Change-Id: I8fa181412c0ee1beeacfda37ffef18251d5f0cd7 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/151912 Reviewed-by: Per Åhgren <peah@webrtc.org> Commit-Queue: Sam Zackrisson <saza@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29176}
50 lines
1.6 KiB
C++
50 lines
1.6 KiB
C++
/*
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* Copyright (c) 2017 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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#ifndef MODULES_AUDIO_PROCESSING_TEST_ECHO_CANCELLER_TEST_TOOLS_H_
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#define MODULES_AUDIO_PROCESSING_TEST_ECHO_CANCELLER_TEST_TOOLS_H_
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#include <algorithm>
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#include <vector>
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#include "api/array_view.h"
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#include "rtc_base/constructor_magic.h"
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#include "rtc_base/random.h"
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namespace webrtc {
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// Randomizes the elements in a vector with values -32767.f:32767.f.
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void RandomizeSampleVector(Random* random_generator, rtc::ArrayView<float> v);
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// Randomizes the elements in a vector with values -amplitude:amplitude.
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void RandomizeSampleVector(Random* random_generator,
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rtc::ArrayView<float> v,
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float amplitude);
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// Class for delaying a signal a fixed number of samples.
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template <typename T>
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class DelayBuffer {
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public:
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explicit DelayBuffer(size_t delay) : buffer_(delay) {}
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~DelayBuffer() = default;
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// Produces a delayed signal copy of x.
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void Delay(rtc::ArrayView<const T> x, rtc::ArrayView<T> x_delayed);
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private:
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std::vector<T> buffer_;
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size_t next_insert_index_ = 0;
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RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(DelayBuffer);
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_TEST_ECHO_CANCELLER_TEST_TOOLS_H_
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