synth/wavetable.h File Reference

Wavetable synthesis. More...

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Typedefs
typedef struct _aubio_wavetable_t	aubio_wavetable_t
	wavetable object
Functions
aubio_wavetable_t *	new_aubio_wavetable (uint_t samplerate, uint_t hop_size)
	create new wavetable object
uint_t	aubio_wavetable_load (aubio_wavetable_t *o, char_t *uri)
	load source in wavetable
void	aubio_wavetable_do (aubio_wavetable_t *o, fvec_t *input, fvec_t *output)
	process wavetable function
void	aubio_wavetable_do_multi (aubio_wavetable_t *o, fmat_t *input, fmat_t *output)
	process wavetable function, multiple channels
uint_t	aubio_wavetable_get_playing (aubio_wavetable_t *o)
	get current playing state
uint_t	aubio_wavetable_set_playing (aubio_wavetable_t *o, uint_t playing)
	set current playing state
uint_t	aubio_wavetable_play (aubio_wavetable_t *o)
	play sample from start
uint_t	aubio_wavetable_stop (aubio_wavetable_t *o)
	stop wavetable
uint_t	aubio_wavetable_set_freq (aubio_wavetable_t *o, smpl_t freq)
	set wavetable frequency
smpl_t	aubio_wavetable_get_freq (aubio_wavetable_t *o)
	get wavetable frequency
uint_t	aubio_wavetable_set_amp (aubio_wavetable_t *o, smpl_t amp)
	set wavetable amplitude
smpl_t	aubio_wavetable_get_amp (aubio_wavetable_t *o)
	get wavetable amplitude
void	del_aubio_wavetable (aubio_wavetable_t *o)
	destroy aubio_wavetable_t object

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Detailed Description

Wavetable synthesis.

This file creates a wavetable and plays it at different frequency.

The `_do` function adds the new samples to the input, and write the result as the output.

Definition in file wavetable.h.

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Function Documentation

void aubio_wavetable_do	(	aubio_wavetable_t *	o,
		fvec_t *	input,
		fvec_t *	output
	)

process wavetable function

Parameters:

o	wavetable, created by new_aubio_wavetable()
input	input of the wavetable, to be added to the output
output	output of the wavetable

This function adds the new samples from the playing wavetable to the output.

If `input` is not NULL and different from `output`, then the samples from `input` are added to the output.

Examples:

examples/aubioonset.c, examples/aubiopitch.c, examples/aubiotrack.c, and synth/test-wavetable.c.

void aubio_wavetable_do_multi	(	aubio_wavetable_t *	o,
		fmat_t *	input,
		fmat_t *	output
	)

process wavetable function, multiple channels

Parameters:

o	wavetable, created by new_aubio_wavetable()
input	input of the wavetable, to be added to the output
output	output of the wavetable

This function adds the new samples from the playing wavetable to the output.

If `input` is not NULL and different from `output`, then the samples from `input` are added to the output.

smpl_t aubio_wavetable_get_amp

(

aubio_wavetable_t *

o

)

get wavetable amplitude

Parameters:

o	wavetable, created by new_aubio_wavetable()

Returns:

current amplitude

smpl_t aubio_wavetable_get_freq

(

aubio_wavetable_t *

o

)

get wavetable frequency

Parameters:

o	wavetable, created by new_aubio_wavetable()

Returns:

current frequency, in Hz

uint_t aubio_wavetable_get_playing

(

aubio_wavetable_t *

o

)

get current playing state

Parameters:

o	wavetable, created by new_aubio_wavetable()

Returns:

0 if not playing, 1 if playing

uint_t aubio_wavetable_load	(	aubio_wavetable_t *	o,
		char_t *	uri
	)

load source in wavetable

Parameters:

o	wavetable, created by new_aubio_wavetable()
uri	the uri of the source to load

Returns:

0 if successful, non-zero otherwise

uint_t aubio_wavetable_play

(

aubio_wavetable_t *

o

)

play sample from start

Parameters:

o	wavetable, created by new_aubio_wavetable()

Returns:

0 if successful, 1 otherwise

Examples:

examples/aubioonset.c, examples/aubiopitch.c, examples/aubiotrack.c, and synth/test-wavetable.c.

uint_t aubio_wavetable_set_amp	(	aubio_wavetable_t *	o,
		smpl_t	amp
	)

set wavetable amplitude

Parameters:

o	wavetable, created by new_aubio_wavetable()
amp	new amplitude value for the wavetable

Returns:

0 if successful, 1 otherwise

Examples:

examples/aubiopitch.c.

uint_t aubio_wavetable_set_freq	(	aubio_wavetable_t *	o,
		smpl_t	freq
	)

set wavetable frequency

Parameters:

o	wavetable, created by new_aubio_wavetable()
freq	new frequency value for the wavetable

Returns:

0 if successful, 1 otherwise

Examples:

examples/aubioonset.c, examples/aubiopitch.c, examples/aubiotrack.c, and synth/test-wavetable.c.

uint_t aubio_wavetable_set_playing	(	aubio_wavetable_t *	o,
		uint_t	playing
	)

set current playing state

Parameters:

o	wavetable, created by new_aubio_wavetable()
playing	0 for not playing, 1 for playing

Returns:

0 if successful, 1 otherwise

uint_t aubio_wavetable_stop

(

aubio_wavetable_t *

o

)

stop wavetable

Parameters:

o	wavetable, created by new_aubio_wavetable()

Returns:

0 if successful, 1 otherwise

Examples:

examples/aubioonset.c, examples/aubiotrack.c, and synth/test-wavetable.c.

void del_aubio_wavetable

(

aubio_wavetable_t *

o

)

destroy aubio_wavetable_t object

Parameters:

o	wavetable, created by new_aubio_wavetable()

Examples:

examples/aubioonset.c, examples/aubiopitch.c, examples/aubiotrack.c, and synth/test-wavetable.c.

aubio_wavetable_t* new_aubio_wavetable	(	uint_t	samplerate,
		uint_t	hop_size
	)

create new wavetable object

Parameters:

samplerate	the sampling rate of the new wavetable
hop_size	the block size of the new wavetable

Returns:

the newly created aubio_wavetable_t

Examples:

examples/aubioonset.c, examples/aubiopitch.c, examples/aubiotrack.c, and synth/test-wavetable.c.