tPitchDetector

Pitch detection algorithm from Joel de Guzman's Q Audio DSP Library. More...

Functions
void	tPitchDetector_init (tPitchDetector *const detector, float lowestFreq, float highestFreq, LEAF *const leaf)
	Initialize a tPitchDetector to the default mempool of a LEAF instance. More...
void	tPitchDetector_initToPool (tPitchDetector *const detector, float lowestFreq, float highestFreq, tMempool *const mempool)
	Initialize a tPitchDetector to a specified mempool. More...
void	tPitchDetector_free (tPitchDetector *const detector)
	Free a tPitchDetector from its mempool. More...
int	tPitchDetector_tick (tPitchDetector *const detector, float sample)
float	tPitchDetector_getFrequency (tPitchDetector *const detector)
float	tPitchDetector_getPeriodicity (tPitchDetector *const detector)
float	tPitchDetector_harmonic (tPitchDetector *const detector, int harmonicIndex)
float	tPitchDetector_predictFrequency (tPitchDetector *const detector)
void	tPitchDetector_setHysteresis (tPitchDetector *const detector, float hysteresis)
	Set the hysteresis used in zero crossing detection. More...

Detailed Description

Pitch detection algorithm from Joel de Guzman's Q Audio DSP Library.

Function Documentation

tPitchDetector_init()

void tPitchDetector_init	(	tPitchDetector *const	detector,
		float	lowestFreq,
		float	highestFreq,
		LEAF *const	leaf
	)

Initialize a tPitchDetector to the default mempool of a LEAF instance.

Parameters

detector	A pointer to the relevant tPitchDetector.
lowestFreq
highestFreq
leaf	A pointer to the leaf instance.

tPitchDetector_initToPool()

void tPitchDetector_initToPool	(	tPitchDetector *const	detector,
		float	lowestFreq,
		float	highestFreq,
		tMempool *const	mempool
	)

Initialize a tPitchDetector to a specified mempool.

Parameters

detector	A pointer to the relevant tPitchDetector.
lowestFreq
highestFreq
mempool	A pointer to the tMempool to use.

tPitchDetector_free()

void tPitchDetector_free

(

tPitchDetector *const

detector

)

Free a tPitchDetector from its mempool.

Parameters

detector

A pointer to the relevant tPitchDetector.

tPitchDetector_tick()

int tPitchDetector_tick	(	tPitchDetector *const	detector,
		float	sample
	)

Parameters

detector	A pointer to the relevant tPitchDetector.
input

tPitchDetector_getFrequency()

float tPitchDetector_getFrequency

(

tPitchDetector *const

detector

)

Parameters

detector

A pointer to the relevant tPitchDetector.

tPitchDetector_getPeriodicity()

float tPitchDetector_getPeriodicity

(

tPitchDetector *const

detector

)

Parameters

detector

A pointer to the relevant tPitchDetector.

tPitchDetector_harmonic()

float tPitchDetector_harmonic	(	tPitchDetector *const	detector,
		int	harmonicIndex
	)

Parameters

detector	A pointer to the relevant tPitchDetector.
harmonicIndex

tPitchDetector_predictFrequency()

float tPitchDetector_predictFrequency

(

tPitchDetector *const

detector

)

Parameters

detector

A pointer to the relevant tPitchDetector.

tPitchDetector_setHysteresis()

void tPitchDetector_setHysteresis	(	tPitchDetector *const	detector,
		float	hysteresis
	)

Set the hysteresis used in zero crossing detection.

Parameters

detector	A pointer to the relevant tPitchDetector.
hysteresis	The hysteresis in decibels. Defaults to -40db.