notes/notes.h File Reference

Note detection object. More...

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Typedefs
typedef struct _aubio_notes_t	aubio_notes_t
	notes detection object
Functions
aubio_notes_t *	new_aubio_notes (const char_t *method, uint_t buf_size, uint_t hop_size, uint_t samplerate)
	create notes detection object
void	del_aubio_notes (aubio_notes_t *o)
	delete notes detection object
void	aubio_notes_do (aubio_notes_t *o, const fvec_t *input, fvec_t *output)
	execute note detection on an input signal frame
uint_t	aubio_notes_set_silence (aubio_notes_t *o, smpl_t silence)
	set notes detection silence threshold
smpl_t	aubio_notes_get_silence (const aubio_notes_t *o)
	get notes detection silence threshold
smpl_t	aubio_notes_get_minioi_ms (const aubio_notes_t *o)
	get notes detection minimum inter-onset interval, in millisecond
uint_t	aubio_notes_set_minioi_ms (aubio_notes_t *o, smpl_t minioi_ms)
	set notes detection minimum inter-onset interval, in millisecond

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Detailed Description

Note detection object.

Definition in file notes.h.

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Function Documentation

void aubio_notes_do	(	aubio_notes_t *	o,
		const fvec_t *	input,
		fvec_t *	output
	)

execute note detection on an input signal frame

Parameters:

	o	note detection object as returned by new_aubio_notes()
	input	input signal of size [hop_size]
	output	output notes, fvec of length 3

The notes output is a vector of length 3 containing:

• 0. the midi note value, or 0 if no note was found
• 1. the note velocity
• 2. the midi note to turn off

Examples:

examples/aubionotes.c.

smpl_t aubio_notes_get_minioi_ms

(

const aubio_notes_t *

o

)

get notes detection minimum inter-onset interval, in millisecond

Parameters:

o

notes detection object as returned by new_aubio_notes()

Returns:

current minimum inter onset interval

smpl_t aubio_notes_get_silence

(

const aubio_notes_t *

o

)

get notes detection silence threshold

Parameters:

o

notes detection object as returned by new_aubio_notes()

Returns:

current silence threshold

uint_t aubio_notes_set_minioi_ms	(	aubio_notes_t *	o,
		smpl_t	minioi_ms
	)

set notes detection minimum inter-onset interval, in millisecond

Parameters:

	o	notes detection object as returned by new_aubio_notes()
	minioi_ms	new inter-onset interval

Returns:

0 on success, non-zero otherwise

Examples:

examples/aubionotes.c.

uint_t aubio_notes_set_silence	(	aubio_notes_t *	o,
		smpl_t	silence
	)

set notes detection silence threshold

Parameters:

	o	notes detection object as returned by new_aubio_notes()
	silence	new silence detection threshold

Returns:

0 on success, non-zero otherwise

Examples:

examples/aubionotes.c.

void del_aubio_notes

(

aubio_notes_t *

o

)

delete notes detection object

Parameters:

o

notes detection object to delete

Examples:

examples/aubionotes.c.

aubio_notes_t* new_aubio_notes	(	const char_t *	method,
		uint_t	buf_size,
		uint_t	hop_size,
		uint_t	samplerate
	)

create notes detection object

Parameters:

	method	notes detection type as specified in specdesc.h
	buf_size	buffer size for phase vocoder
	hop_size	hop size for phase vocoder
	samplerate	sampling rate of the input signal

Returns:

newly created aubio_notes_t

Examples:

examples/aubionotes.c.