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Diffstat (limited to 'Middlewares/Third_Party/ARM/ARM.CMSIS-DSP.1.17.1/Source/TransformFunctions/arm_mfcc_init_f32.c')
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diff --git a/Middlewares/Third_Party/ARM/ARM.CMSIS-DSP.1.17.1/Source/TransformFunctions/arm_mfcc_init_f32.c b/Middlewares/Third_Party/ARM/ARM.CMSIS-DSP.1.17.1/Source/TransformFunctions/arm_mfcc_init_f32.c new file mode 100755 index 0000000..001e89f --- /dev/null +++ b/Middlewares/Third_Party/ARM/ARM.CMSIS-DSP.1.17.1/Source/TransformFunctions/arm_mfcc_init_f32.c @@ -0,0 +1,418 @@ +/* ---------------------------------------------------------------------- + * Project: CMSIS DSP Library + * Title: arm_mfcc_init_f32.c + * Description: MFCC initialization function for the f32 version + * + * $Date: 07 September 2021 + * $Revision: V1.10.0 + * + * Target Processor: Cortex-M and Cortex-A cores + * -------------------------------------------------------------------- */ + +/* + * Copyright (C) 2010-2021 ARM Limited or its affiliates. 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 + * + * 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 "arm_compiler_specific.h" + + + +/** + * @defgroup MFCCF32 MFCC F32 + */ + + +/** + @ingroup MFCC + */ + + +/** + @addtogroup MFCCF32 + @{ + */ + + +#include "dsp/transform_functions.h" + + + +/** + @brief Generic initialization of the MFCC F32 instance structure + @param[out] S points to the mfcc instance structure + @param[in] fftLen fft length + @param[in] nbMelFilters number of Mel filters + @param[in] nbDctOutputs number of Dct outputs + @param[in] dctCoefs points to an array of DCT coefficients + @param[in] filterPos points of the array of filter positions + @param[in] filterLengths points to the array of filter lengths + @param[in] filterCoefs points to the array of filter coefficients + @param[in] windowCoefs points to the array of window coefficients + + @return error status + + @par Description + The matrix of Mel filter coefficients is sparse. + Most of the coefficients are zero. + To avoid multiplying the spectrogram by those zeros, the + filter is applied only to a given position in the spectrogram + and on a given number of FFT bins (the filter length). + It is the reason for the arrays filterPos and filterLengths. + + window coefficients can describe (for instance) a Hamming window. + The array has the same size as the FFT length. + + The folder Scripts is containing a Python script which can be used + to generate the filter, dct and window arrays. + + @par + This function should be used only if you don't know the FFT sizes that + you'll need at build time. The use of this function will prevent the + linker from removing the FFT tables that are not needed and the library + code size will be bigger than needed. + + @par + If you use CMSIS-DSP as a static library, and if you know the MFCC sizes + that you need at build time, then it is better to use the initialization + functions defined for each MFCC size. + + */ + +ARM_DSP_ATTRIBUTE arm_status arm_mfcc_init_f32( + arm_mfcc_instance_f32 * S, + uint32_t fftLen, + uint32_t nbMelFilters, + uint32_t nbDctOutputs, + const float32_t *dctCoefs, + const uint32_t *filterPos, + const uint32_t *filterLengths, + const float32_t *filterCoefs, + const float32_t *windowCoefs + ) +{ + arm_status status; + + S->fftLen=fftLen; + S->nbMelFilters=nbMelFilters; + S->nbDctOutputs=nbDctOutputs; + S->dctCoefs=dctCoefs; + S->filterPos=filterPos; + S->filterLengths=filterLengths; + S->filterCoefs=filterCoefs; + S->windowCoefs=windowCoefs; + + #if defined(ARM_MFCC_USE_CFFT) + status=arm_cfft_init_f32(&(S->cfft),fftLen); + #else + status=arm_rfft_fast_init_f32(&(S->rfft),fftLen); + #endif + + return(status); +} + +#if defined(ARM_MFCC_USE_CFFT) +#define MFCC_INIT_F32(LEN) \ +ARM_DSP_ATTRIBUTE arm_status arm_mfcc_init_##LEN##_f32( \ + arm_mfcc_instance_f32 * S, \ + uint32_t nbMelFilters, \ + uint32_t nbDctOutputs, \ + const float32_t *dctCoefs, \ + const uint32_t *filterPos, \ + const uint32_t *filterLengths, \ + const float32_t *filterCoefs, \ + const float32_t *windowCoefs \ + ) \ +{ \ + arm_status status; \ + \ + S->fftLen=LEN; \ + S->nbMelFilters=nbMelFilters; \ + S->nbDctOutputs=nbDctOutputs; \ + S->dctCoefs=dctCoefs; \ + S->filterPos=filterPos; \ + S->filterLengths=filterLengths; \ + S->filterCoefs=filterCoefs; \ + S->windowCoefs=windowCoefs; \ + \ + status=arm_cfft_init_##LEN##_f32(&(S->cfft));\ + \ + return(status); \ +} +#else +#define MFCC_INIT_F32(LEN) \ +ARM_DSP_ATTRIBUTE arm_status arm_mfcc_init_##LEN##_f32( \ + arm_mfcc_instance_f32 * S, \ + uint32_t nbMelFilters, \ + uint32_t nbDctOutputs, \ + const float32_t *dctCoefs, \ + const uint32_t *filterPos, \ + const uint32_t *filterLengths, \ + const float32_t *filterCoefs, \ + const float32_t *windowCoefs \ + ) \ +{ \ + arm_status status; \ + \ + S->fftLen=LEN; \ + S->nbMelFilters=nbMelFilters; \ + S->nbDctOutputs=nbDctOutputs; \ + S->dctCoefs=dctCoefs; \ + S->filterPos=filterPos; \ + S->filterLengths=filterLengths; \ + S->filterCoefs=filterCoefs; \ + S->windowCoefs=windowCoefs; \ + \ + status=arm_rfft_fast_init_##LEN##_f32(&(S->rfft));\ + \ + return(status); \ +} +#endif + +/** + @brief Initialization of the MFCC F32 instance structure for 32 samples MFCC + @param[out] S points to the mfcc instance structure + @param[in] nbMelFilters number of Mel filters + @param[in] nbDctOutputs number of Dct outputs + @param[in] dctCoefs points to an array of DCT coefficients + @param[in] filterPos points of the array of filter positions + @param[in] filterLengths points to the array of filter lengths + @param[in] filterCoefs points to the array of filter coefficients + @param[in] windowCoefs points to the array of window coefficients + + @return error status + + @par Description + The matrix of Mel filter coefficients is sparse. + Most of the coefficients are zero. + To avoid multiplying the spectrogram by those zeros, the + filter is applied only to a given position in the spectrogram + and on a given number of FFT bins (the filter length). + It is the reason for the arrays filterPos and filterLengths. + + window coefficients can describe (for instance) a Hamming window. + The array has the same size as the FFT length. + + The folder Scripts is containing a Python script which can be used + to generate the filter, dct and window arrays. + */ +MFCC_INIT_F32(32) + +/** + @brief Initialization of the MFCC F32 instance structure for 64 samples MFCC + @param[out] S points to the mfcc instance structure + @param[in] nbMelFilters number of Mel filters + @param[in] nbDctOutputs number of Dct outputs + @param[in] dctCoefs points to an array of DCT coefficients + @param[in] filterPos points of the array of filter positions + @param[in] filterLengths points to the array of filter lengths + @param[in] filterCoefs points to the array of filter coefficients + @param[in] windowCoefs points to the array of window coefficients + + @return error status + + @par Description + The matrix of Mel filter coefficients is sparse. + Most of the coefficients are zero. + To avoid multiplying the spectrogram by those zeros, the + filter is applied only to a given position in the spectrogram + and on a given number of FFT bins (the filter length). + It is the reason for the arrays filterPos and filterLengths. + + window coefficients can describe (for instance) a Hamming window. + The array has the same size as the FFT length. + + The folder Scripts is containing a Python script which can be used + to generate the filter, dct and window arrays. + */ +MFCC_INIT_F32(64) + +/** + @brief Initialization of the MFCC F32 instance structure for 128 samples MFCC + @param[out] S points to the mfcc instance structure + @param[in] nbMelFilters number of Mel filters + @param[in] nbDctOutputs number of Dct outputs + @param[in] dctCoefs points to an array of DCT coefficients + @param[in] filterPos points of the array of filter positions + @param[in] filterLengths points to the array of filter lengths + @param[in] filterCoefs points to the array of filter coefficients + @param[in] windowCoefs points to the array of window coefficients + + @return error status + + @par Description + The matrix of Mel filter coefficients is sparse. + Most of the coefficients are zero. + To avoid multiplying the spectrogram by those zeros, the + filter is applied only to a given position in the spectrogram + and on a given number of FFT bins (the filter length). + It is the reason for the arrays filterPos and filterLengths. + + window coefficients can describe (for instance) a Hamming window. + The array has the same size as the FFT length. + + The folder Scripts is containing a Python script which can be used + to generate the filter, dct and window arrays. + */ +MFCC_INIT_F32(128) + +/** + @brief Initialization of the MFCC F32 instance structure for 256 samples MFCC + @param[out] S points to the mfcc instance structure + @param[in] nbMelFilters number of Mel filters + @param[in] nbDctOutputs number of Dct outputs + @param[in] dctCoefs points to an array of DCT coefficients + @param[in] filterPos points of the array of filter positions + @param[in] filterLengths points to the array of filter lengths + @param[in] filterCoefs points to the array of filter coefficients + @param[in] windowCoefs points to the array of window coefficients + + @return error status + + @par Description + The matrix of Mel filter coefficients is sparse. + Most of the coefficients are zero. + To avoid multiplying the spectrogram by those zeros, the + filter is applied only to a given position in the spectrogram + and on a given number of FFT bins (the filter length). + It is the reason for the arrays filterPos and filterLengths. + + window coefficients can describe (for instance) a Hamming window. + The array has the same size as the FFT length. + + The folder Scripts is containing a Python script which can be used + to generate the filter, dct and window arrays. + */ +MFCC_INIT_F32(256) + +/** + @brief Initialization of the MFCC F32 instance structure for 512 samples MFCC + @param[out] S points to the mfcc instance structure + @param[in] nbMelFilters number of Mel filters + @param[in] nbDctOutputs number of Dct outputs + @param[in] dctCoefs points to an array of DCT coefficients + @param[in] filterPos points of the array of filter positions + @param[in] filterLengths points to the array of filter lengths + @param[in] filterCoefs points to the array of filter coefficients + @param[in] windowCoefs points to the array of window coefficients + + @return error status + + @par Description + The matrix of Mel filter coefficients is sparse. + Most of the coefficients are zero. + To avoid multiplying the spectrogram by those zeros, the + filter is applied only to a given position in the spectrogram + and on a given number of FFT bins (the filter length). + It is the reason for the arrays filterPos and filterLengths. + + window coefficients can describe (for instance) a Hamming window. + The array has the same size as the FFT length. + + The folder Scripts is containing a Python script which can be used + to generate the filter, dct and window arrays. + */ +MFCC_INIT_F32(512) + +/** + @brief Initialization of the MFCC F32 instance structure for 1024 samples MFCC + @param[out] S points to the mfcc instance structure + @param[in] nbMelFilters number of Mel filters + @param[in] nbDctOutputs number of Dct outputs + @param[in] dctCoefs points to an array of DCT coefficients + @param[in] filterPos points of the array of filter positions + @param[in] filterLengths points to the array of filter lengths + @param[in] filterCoefs points to the array of filter coefficients + @param[in] windowCoefs points to the array of window coefficients + + @return error status + + @par Description + The matrix of Mel filter coefficients is sparse. + Most of the coefficients are zero. + To avoid multiplying the spectrogram by those zeros, the + filter is applied only to a given position in the spectrogram + and on a given number of FFT bins (the filter length). + It is the reason for the arrays filterPos and filterLengths. + + window coefficients can describe (for instance) a Hamming window. + The array has the same size as the FFT length. + + The folder Scripts is containing a Python script which can be used + to generate the filter, dct and window arrays. + */ +MFCC_INIT_F32(1024) + +/** + @brief Initialization of the MFCC F32 instance structure for 2048 samples MFCC + @param[out] S points to the mfcc instance structure + @param[in] nbMelFilters number of Mel filters + @param[in] nbDctOutputs number of Dct outputs + @param[in] dctCoefs points to an array of DCT coefficients + @param[in] filterPos points of the array of filter positions + @param[in] filterLengths points to the array of filter lengths + @param[in] filterCoefs points to the array of filter coefficients + @param[in] windowCoefs points to the array of window coefficients + + @return error status + + @par Description + The matrix of Mel filter coefficients is sparse. + Most of the coefficients are zero. + To avoid multiplying the spectrogram by those zeros, the + filter is applied only to a given position in the spectrogram + and on a given number of FFT bins (the filter length). + It is the reason for the arrays filterPos and filterLengths. + + window coefficients can describe (for instance) a Hamming window. + The array has the same size as the FFT length. + + The folder Scripts is containing a Python script which can be used + to generate the filter, dct and window arrays. + */ +MFCC_INIT_F32(2048) + +/** + @brief Initialization of the MFCC F32 instance structure for 4096 samples MFCC + @param[out] S points to the mfcc instance structure + @param[in] nbMelFilters number of Mel filters + @param[in] nbDctOutputs number of Dct outputs + @param[in] dctCoefs points to an array of DCT coefficients + @param[in] filterPos points of the array of filter positions + @param[in] filterLengths points to the array of filter lengths + @param[in] filterCoefs points to the array of filter coefficients + @param[in] windowCoefs points to the array of window coefficients + + @return error status + + @par Description + The matrix of Mel filter coefficients is sparse. + Most of the coefficients are zero. + To avoid multiplying the spectrogram by those zeros, the + filter is applied only to a given position in the spectrogram + and on a given number of FFT bins (the filter length). + It is the reason for the arrays filterPos and filterLengths. + + window coefficients can describe (for instance) a Hamming window. + The array has the same size as the FFT length. + + The folder Scripts is containing a Python script which can be used + to generate the filter, dct and window arrays. + */ +MFCC_INIT_F32(4096) + +/** + @} end of MFCCF32 group + */ |