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 More...
void	del_aubio_notes (aubio_notes_t *o)
	delete notes detection object More...
void	aubio_notes_do (aubio_notes_t *o, const fvec_t *input, fvec_t *output)
	execute note detection on an input signal frame More...
uint_t	aubio_notes_set_silence (aubio_notes_t *o, smpl_t silence)
	set notes detection silence threshold More...
smpl_t	aubio_notes_get_silence (const aubio_notes_t *o)
	get notes detection silence threshold More...
smpl_t	aubio_notes_get_minioi_ms (const aubio_notes_t *o)
	get notes detection minimum inter-onset interval, in millisecond More...
uint_t	aubio_notes_set_minioi_ms (aubio_notes_t *o, smpl_t minioi_ms)
	set notes detection minimum inter-onset interval, in millisecond More...

Detailed Description

Note detection object.

Definition in file notes.h.

Function Documentation

aubio_notes_do()

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.

aubio_notes_get_minioi_ms()

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

aubio_notes_get_silence()

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

aubio_notes_set_minioi_ms()

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.

aubio_notes_set_silence()

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.

del_aubio_notes()

void del_aubio_notes

(

aubio_notes_t *

o

)

delete notes detection object

Parameters

o	notes detection object to delete

Examples:

examples/aubionotes.c.

new_aubio_notes()

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.