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author | George Gekov <george.gekov@arm.com> | 2021-08-16 11:32:10 +0100 |
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committer | Jim Flynn <jim.flynn@arm.com> | 2022-02-05 19:49:06 +0000 |
commit | 23c26277086c78704a17f0dae86da947816320c0 (patch) | |
tree | 88b02fd1fae3130256d059251788a7ef68d2831f /samples/KeywordSpotting/include/DsCNNPreprocessor.hpp | |
parent | 922b912fd2d462bac0809bac5669310ad1506310 (diff) | |
download | armnn-23c26277086c78704a17f0dae86da947816320c0.tar.gz |
MLECO-2079 Adding the C++ KWS example
Signed-off-by: Eanna O Cathain <eanna.ocathain@arm.com>
Change-Id: I81899bbfaada32f478c2e2fc6441eabb94d8d0fc
Diffstat (limited to 'samples/KeywordSpotting/include/DsCNNPreprocessor.hpp')
-rw-r--r-- | samples/KeywordSpotting/include/DsCNNPreprocessor.hpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/samples/KeywordSpotting/include/DsCNNPreprocessor.hpp b/samples/KeywordSpotting/include/DsCNNPreprocessor.hpp new file mode 100644 index 0000000000..b635d1a41e --- /dev/null +++ b/samples/KeywordSpotting/include/DsCNNPreprocessor.hpp @@ -0,0 +1,39 @@ +// +// Copyright © 2021 Arm Ltd and Contributors. All rights reserved. +// SPDX-License-Identifier: MIT +// +#ifndef KEYWORD_SPOTTING_EXAMPLE_DSCNNPREPROCESSOR_HPP +#define KEYWORD_SPOTTING_EXAMPLE_DSCNNPREPROCESSOR_HPP + +#include <numeric> +#include "DsCnnMfcc.hpp" + +namespace kws +{ +class DsCNNPreprocessor +{ +public: + DsCNNPreprocessor(uint32_t windowLen, uint32_t windowStride, + std::unique_ptr<DsCnnMFCC> mfccInst); + + /** + * @brief Calculates the features required from audio data. This + * includes MFCC, first and second order deltas, + * normalisation and finally, quantisation. The tensor is + * populated with feature from a given window placed along + * in a single row. + * @param[in] audioData pointer to the first element of audio data + * @param[in] output output to be populated + * @return true if successful, false in case of error. + */ + std::vector<int8_t> Invoke(const float* audioData, + size_t dataSize, + int quantOffset, + float quantScale) ; + + uint32_t m_windowLen; // Window length for MFCC + uint32_t m_windowStride; // Window stride len for MFCC + std::unique_ptr<MFCC> m_mfcc; +}; +} // namespace kws +#endif //KEYWORD_SPOTTING_EXAMPLE_DSCNNPREPROCESSOR_HPP |