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Diffstat (limited to 'samples/SpeechRecognition/include/MathUtils.hpp')
-rw-r--r-- | samples/SpeechRecognition/include/MathUtils.hpp | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/samples/SpeechRecognition/include/MathUtils.hpp b/samples/SpeechRecognition/include/MathUtils.hpp deleted file mode 100644 index 5f81fb6507..0000000000 --- a/samples/SpeechRecognition/include/MathUtils.hpp +++ /dev/null @@ -1,85 +0,0 @@ -// -// Copyright © 2020 Arm Ltd and Contributors. All rights reserved. -// SPDX-License-Identifier: MIT -// - -#include <vector> -#include <cmath> -#include <cstdint> -#include <numeric> - -class MathUtils -{ - -public: - - /** - * @brief Computes the FFT for the input vector - * @param[in] input Floating point vector of input elements - * @param[out] fftOutput Output buffer to be populated by computed - * FFTs - * @return none - */ - static void FftF32(std::vector<float>& input, - std::vector<float>& fftOutput); - - - /** - * @brief Computes the dot product of two 1D floating point - * vectors. - * result = sum(srcA[0]*srcB[0] + srcA[1]*srcB[1] + ..) - * @param[in] srcPtrA pointer to the first element of first - * array - * @param[in] srcPtrB pointer to the first element of second - * array - * @param[in] srcLen Number of elements in the array/vector - * @return dot product - */ - static float DotProductF32(float* srcPtrA, float* srcPtrB, - const int srcLen); - - /** - * @brief Computes the squared magnitude of floating point - * complex number array. - * @param[in] ptrSrc pointer to the first element of input - * array - * @param[in] srcLen Number of elements in the array/vector - * @param[out] ptrDst Output buffer to be populated - * @param[in] dstLen output buffer len (for sanity check only) - * @return true if successful, false otherwise - */ - static bool ComplexMagnitudeSquaredF32(float* ptrSrc, - const int srcLen, - float* ptrDst, - const int dstLen); - - /** - * @brief Computes the natural logarithms of input floating point - * vector - * @param[in] input Floating point input vector - * @param[out] output Pre-allocated buffer to be populated with - * natural log values of each input element - * @return none - */ - static void VecLogarithmF32(std::vector <float>& input, - std::vector <float>& output); - - /** - * @brief Gets the mean of a floating point array of elements - * @param[in] ptrSrc pointer to the first element - * @param[in] srcLen Number of elements in the array/vector - * @return average value - */ - static float MeanF32(float* ptrSrc, const uint32_t srcLen); - - /** - * @brief Gets the standard deviation of a floating point array - * of elements - * @param[in] ptrSrc pointer to the first element - * @param[in] srcLen Number of elements in the array/vector - * @param[in] mean pre-computed mean value - * @return standard deviation value - */ - static float StdDevF32(float* ptrSrc, const uint32_t srcLen, - const float mean); -}; |