wehub-resource-sync
62 lines
2.4 KiB
C++
62 lines
2.4 KiB
C++
//
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// StftTest.cpp
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// MNNTests
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//
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// Created by MNN on 2024/11/27.
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// Copyright © 2018, Alibaba Group Holding Limited
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//
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#ifdef MNN_BUILD_AUDIO
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#include <MNN/expr/Expr.hpp>
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#include <MNN/expr/ExprCreator.hpp>
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#include "MNNTestSuite.h"
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#include "TestUtils.h"
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using namespace MNN::Express;
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class StftTest : public MNNTestCase {
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public:
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virtual ~StftTest() = default;
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virtual bool run(int precision) {
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/*
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python:
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import torch
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freq = 5, sample_rate = 100, duration = 0.2
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t = torch.arange(0, duration, 1.0 / sample_rate)
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sine_wave = torch.sin(2 * torch.pi * freq * t)
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n_fft = 8, hop_length = 4, win_length = 8
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window = torch.hann_window(win_length)
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stft_result = torch.stft(sine_wave, n_fft=n_fft, hop_length=hop_length,
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win_length=win_length, window=window, center=False)
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magnitude = torch.abs(stft_result).transpose(1, 0)
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*/
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auto signal = _Input({ 20 }, NCHW);
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auto window = _Input({ 8 }, NCHW);
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signal->setName("signal");
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window->setName("window");
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const float signalData[] = {
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0.000, 0.309, 0.588, 0.809, 0.951, 1.000, 0.951, 0.809, 0.588, 0.309,
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0.000, -0.309, -0.588, -0.809, -0.951, -1.000, -0.951, -0.809, -0.588, -0.309
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};
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const float windowData[] = { 0.000, 0.146, 0.500, 0.854, 1.000, 0.854, 0.500, 0.146 };
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auto signalPtr = signal->writeMap<float>();
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auto windowPtr = window->writeMap<float>();
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memcpy(signalPtr, signalData, 20 * sizeof(float));
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memcpy(windowPtr, windowData, 8 * sizeof(float));
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auto output = _Stft(signal, window, 8, 4);
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const float expectedOutput[] = {
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3.428, 1.958, 0.203, 0.029, 0.013, 2.119, 1.501, 0.261, 0.041, 0.008,
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2.119, 1.501, 0.261, 0.041, 0.008, 3.428, 1.958, 0.203, 0.029, 0.013
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};
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auto gotOutput = output->readMap<float>();
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for (int i = 0; i < 20; ++i) {
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auto diff = ::fabsf(gotOutput[i] - expectedOutput[i]);
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if (diff > 0.01) {
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MNN_ERROR("StftTest test failed: %f - %f!\n", expectedOutput[i], gotOutput[i]);
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return false;
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}
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}
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return true;
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}
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};
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MNNTestSuiteRegister(StftTest, "op/stft");
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#endif // MNN_BUILD_AUDIO
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