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Diffstat (limited to 'tests/use_case/asr/MfccTests.cc')
-rw-r--r-- | tests/use_case/asr/MfccTests.cc | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/tests/use_case/asr/MfccTests.cc b/tests/use_case/asr/MfccTests.cc new file mode 100644 index 0000000..c70e53e --- /dev/null +++ b/tests/use_case/asr/MfccTests.cc @@ -0,0 +1,170 @@ +/* + * Copyright (c) 2021 Arm Limited. All rights reserved. + * SPDX-License-Identifier: Apache-2.0 + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "Wav2LetterMfcc.hpp" + +#include <algorithm> +#include <catch.hpp> +#include <limits> + +/* First 512 samples from itellyou.wav. */ +const std::vector<int16_t> testWav1 = std::vector<int16_t> { + -3,0,1,-1,2,3,-2,2, + 1,-2,0,3,-1,8,3,2, + -1,-1,2,7,3,5,6,6, + 6,12,5,6,3,3,5,4, + 4,6,7,7,7,3,7,2, + 8,4,4,2,-4,-1,-1,-4, + 2,1,-1,-4,0,-7,-6,-2, + -5,1,-5,-1,-7,-3,-3,-7, + 0,-3,3,-5,0,1,-2,-2, + -3,-3,-7,-3,-2,-6,-5,-8, + -2,-8,4,-9,-4,-9,-5,-5, + -3,-9,-3,-9,-1,-7,-4,1, + -3,2,-8,-4,-4,-5,1,-3, + -1,0,-1,-2,-3,-2,-4,-1, + 1,-1,3,0,3,2,0,0, + 0,-3,1,1,0,8,3,4, + 1,5,6,4,7,3,3,0, + 3,6,7,6,4,5,9,9, + 5,5,8,1,6,9,6,6, + 7,1,8,1,5,0,5,5, + 0,3,2,7,2,-3,3,0, + 3,0,0,0,2,0,-1,-1, + -2,-3,-8,0,1,0,-3,-3, + -3,-2,-3,-3,-4,-6,-2,-8, + -9,-4,-1,-5,-3,-3,-4,-3, + -6,3,0,-1,-2,-9,-4,-2, + 2,-1,3,-5,-5,-2,0,-2, + 0,-1,-3,1,-2,9,4,5, + 2,2,1,0,-6,-2,0,0, + 0,-1,4,-4,3,-7,-1,5, + -6,-1,-5,4,3,9,-2,1, + 3,0,0,-2,1,2,1,1, + 0,3,2,-1,3,-3,7,0, + 0,3,2,2,-2,3,-2,2, + -3,4,-1,-1,-5,-1,-3,-2, + 1,-1,3,2,4,1,2,-2, + 0,2,7,0,8,-3,6,-3, + 6,1,2,-3,-1,-1,-1,1, + -2,2,1,2,0,-2,3,-2, + 3,-2,1,0,-3,-1,-2,-4, + -6,-5,-8,-1,-4,0,-3,-1, + -1,-1,0,-2,-3,-7,-1,0, + 1,5,0,5,1,1,-3,0, + -6,3,-8,4,-8,6,-6,1, + -6,-2,-5,-6,0,-5,4,-1, + 4,-2,1,2,1,0,-2,0, + 0,2,-2,2,-5,2,0,-2, + 1,-2,0,5,1,0,1,5, + 0,8,3,2,2,0,5,-2, + 3,1,0,1,0,-2,-1,-3, + 1,-1,3,0,3,0,-2,-1, + -4,-4,-4,-1,-4,-4,-3,-6, + -3,-7,-3,-1,-2,0,-5,-4, + -7,-3,-2,-2,1,2,2,8, + 5,4,2,4,3,5,0,3, + 3,6,4,2,2,-2,4,-2, + 3,3,2,1,1,4,-5,2, + -3,0,-1,1,-2,2,5,1, + 4,2,3,1,-1,1,0,6, + 0,-2,-1,1,-1,2,-5,-1, + -5,-1,-6,-3,-3,2,4,0, + -1,-5,3,-4,-1,-3,-4,1, + -4,1,-1,-1,0,-5,-4,-2, + -1,-1,-3,-7,-3,-3,4,4, +}; + +const std::vector<int16_t> testWav2 = std::vector<int16_t> (512, 0); + +/* Golden mfcc output for testwav1. */ +const std::vector<float> golden_mfcc_output_testWav1 { + -835.24603, 21.010452, 18.699404, 7.4338417, 19.028961, -5.401735, 6.4761047, -11.400679, + 8.392709, 12.202361, 8.403276, -13.508412, -18.307348 +}; + +/* Golden mfcc output for the all zero wav. */ +const std::vector<float> golden_mfcc_output_testWav2 { + -1131.37085, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; + + +arm::app::audio::Wav2LetterMFCC GetMFCCInstance() +{ + const auto sampFreq = arm::app::audio::Wav2LetterMFCC::ms_defaultSamplingFreq; + const auto frameLenMs = 32; + const auto numMfccFeats = 13; + const auto frameLenSamples = sampFreq * frameLenMs * 0.001; + return arm::app::audio::Wav2LetterMFCC(numMfccFeats, frameLenSamples); +} + +template <class T> +void TestQuantisedMFCC() +{ + const auto quantScale = 0.1410219967365265; + const auto quantOffset = 11; + std::vector<T> mfccOutput = GetMFCCInstance().MfccComputeQuant<T>(testWav1, quantScale, quantOffset); + + long min_val = std::numeric_limits<T>::min(); + long max_val = std::numeric_limits<T>::max(); + + for (size_t i = 0; i < golden_mfcc_output_testWav1.size(); i++){ + long TestWavMfcc = (std::lround((golden_mfcc_output_testWav1[i] / quantScale) + quantOffset)); + T quantizedTestWavMfcc = static_cast<T>(std::max(min_val, std::min(TestWavMfcc, max_val))); + + REQUIRE(quantizedTestWavMfcc == Approx(mfccOutput[i]).margin(2)); + } +} + +template void TestQuantisedMFCC<int8_t>(); +template void TestQuantisedMFCC<uint8_t>(); +template void TestQuantisedMFCC<int16_t>(); + +TEST_CASE("MFCC calculation") +{ + hal_platform platform; + data_acq_module dataAcq; + data_psn_module dataPsn; + platform_timer timer; + + /* Initialise the HAL and platform. */ + hal_init(&platform, &dataAcq, &dataPsn, &timer); + hal_platform_init(&platform); + + SECTION("FP32") + { + auto mfccOutput = GetMFCCInstance().MfccCompute(testWav1); + REQUIRE_THAT( mfccOutput, Catch::Approx( golden_mfcc_output_testWav1 ).margin(0.3) ); + + auto mfccOutput2 = GetMFCCInstance().MfccCompute(testWav2); + REQUIRE_THAT( mfccOutput2, Catch::Approx( golden_mfcc_output_testWav2 ).margin(0.001) ); + } + + SECTION("int8_t") + { + TestQuantisedMFCC<int8_t>(); + } + + SECTION("uint8_t") + { + TestQuantisedMFCC<uint8_t>(); + } + + SECTION("int16_t") + { + TestQuantisedMFCC<int16_t>(); + } +} |