MFCC

Functions
tpt_status	tpt_mfcc_init_f32 (tpt_mfcc_instance_f32 *S, uint32_t aLogN, uint32_t nbMelFilters, uint32_t nbDctOutputs, const f32_t *dctCoefs, const uint32_t *filterPos, const uint32_t *filterLengths, const f32_t *filterCoefs, const f32_t *windowCoefs)
	Instance structure for the F32 MFCC function.
tpt_status	tpt_mfcc_init_q15 (tpt_mfcc_instance_q15 *S, uint32_t aLogN, uint32_t nbMelFilters, uint32_t nbDctOutputs, const q15_t *dctCoefs, const uint32_t *filterPos, const uint32_t *filterLengths, const q15_t *filterCoefs, const q15_t *windowCoefs)
	Instance structure for the Q15 MFCC function.
tpt_status	tpt_mfcc_init_q31 (tpt_mfcc_instance_q31 *S, uint32_t aLogN, uint32_t nbMelFilters, uint32_t nbDctOutputs, const q31_t *dctCoefs, const uint32_t *filterPos, const uint32_t *filterLengths, const q31_t *filterCoefs, const q31_t *windowCoefs)
	Instance structure for the Q31 MFCC function.

Detailed Description

Function Documentation

tpt_mfcc_init_f32()

tpt_status tpt_mfcc_init_f32	(	tpt_mfcc_instance_f32 *	S,
		uint32_t	fftLen,
		uint32_t	nbMelFilters,
		uint32_t	nbDctOutputs,
		const f32_t *	dctCoefs,
		const uint32_t *	filterPos,
		const uint32_t *	filterLengths,
		const f32_t *	filterCoefs,
		const f32_t *	windowCoefs )

Instance structure for the F32 MFCC function.

Parameters

[out]	S	points to the mfcc instance structure
[in]	aLogN	fft length
[in]	nbMelFilters	number of Mel filters
[out]	nbDctOutputs	number of Dct outputs
[in]	dctCoefs	points to an array of DCT coefficients
[in]	filterPos	points of the array of filter positions
[in]	filterLengths	points to the array of filter lengths
[in]	filterCoefs	points to the array of filter coefficients
[in]	windowCoefs	points to the array of window coefficients

Returns

tpt_status

• TPT_MATH_SUCCESS : Operation is successful.
• TPT_MATH_ARGUMENT_ERROR : aLogN is not supported.

tpt_mfcc_init_q15()

tpt_status tpt_mfcc_init_q15	(	tpt_mfcc_instance_q15 *	S,
		uint32_t	aLogN,
		uint32_t	nbMelFilters,
		uint32_t	nbDctOutputs,
		const q15_t *	dctCoefs,
		const uint32_t *	filterPos,
		const uint32_t *	filterLengths,
		const q15_t *	filterCoefs,
		const q15_t *	windowCoefs )

Instance structure for the Q15 MFCC function.

Parameters

[out]	S	points to the mfcc instance structure
[in]	aLogN	fft length
[in]	nbMelFilters	number of Mel filters
[out]	nbDctOutputs	number of Dct outputs
[in]	dctCoefs	points to an array of DCT coefficients
[in]	filterPos	points of the array of filter positions
[in]	filterLengths	points to the array of filter lengths
[in]	filterCoefs	points to the array of filter coefficients
[in]	windowCoefs	points to the array of window coefficients

tpt_mfcc_init_q31()

tpt_status tpt_mfcc_init_q31	(	tpt_mfcc_instance_q31 *	S,
		uint32_t	aLogN,
		uint32_t	nbMelFilters,
		uint32_t	nbDctOutputs,
		const q31_t *	dctCoefs,
		const uint32_t *	filterPos,
		const uint32_t *	filterLengths,
		const q31_t *	filterCoefs,
		const q31_t *	windowCoefs )

Instance structure for the Q31 MFCC function.

Parameters

[out]	S	points to the mfcc instance structure
[in]	aLogN	fft length
[in]	nbMelFilters	number of Mel filters
[out]	nbDctOutputs	number of Dct outputs
[in]	dctCoefs	points to an array of DCT coefficients
[in]	filterPos	points of the array of filter positions
[in]	filterLengths	points to the array of filter lengths
[in]	filterCoefs	points to the array of filter coefficients
[in]	windowCoefs	points to the array of window coefficients

Returns

tpt_status

• TPT_MATH_SUCCESS : Operation is successful.
• TPT_MATH_ARGUMENT_ERROR : aLogN is not supported.