VAD API Functions

Functions
void	vad_init (vad_state_t *state)
	Function that initialises a VAD instance. Must be called before vad_probability_voice. More...
uint8_t	vad_probability_voice (const int32_t input[VAD_FRAME_ADVANCE], vad_state_t *state)
	Function that classifies whether the recent set of samples contains voice. More...

Detailed Description

Function Documentation

vad_init()

void vad_init

(

vad_state_t *

state

)

Function that initialises a VAD instance. Must be called before vad_probability_voice.

Parameters

state[inout]

Pointer to a vad_state_t state structure

vad_probability_voice()

uint8_t vad_probability_voice	(	const int32_t	input[VAD_FRAME_ADVANCE],
		vad_state_t *	state
	)

Function that classifies whether the recent set of samples contains voice.

Parameters

input[in]	Array of samples sampled in the time domain It should contain VAD_FRAME_ADVANCE new samples since the last call
state[inout]	Reference to the state stucture. Should be declared as vad_state_t state. Prior to calling the funciton, the state must have been initialised with vad_init().

Returns

A number from 0 to 255, where 0 indicates very likely not voice, and 255 indicates very likely voice