AudioUtil.VoiceDetector< T > Class Template Reference

Simple voice activity detector triggered by signal level. More...

Inherits IProcessor< T >, and AudioUtil.IVoiceDetector.

Public Member Functions
abstract T[]	Process (T[] buf)
	Process a frame of data. More...
void	Dispose ()

Protected Attributes
float	norm
float	threshold
int	activityDelay
int	autoSilenceCounter = 0
int	valuesCountPerSec
int	activityDelayValuesCount

Properties
bool	On [get, set]
	If true, voice detection enabled. More...
float	Threshold [get, set]
	Voice detected as soon as signal level exceeds threshold. More...
bool	Detected [get, protected set]
	If true, voice detected. More...
DateTime	DetectedTime [get]
	Last time when switched to detected state. More...
int	ActivityDelayMs [get, set]
	Keep detected state during this time after signal level dropped below threshold. More...
Properties inherited from AudioUtil.IVoiceDetector
bool	On [get, set]
	If true, voice detection enabled. More...
float	Threshold [get, set]
	Voice detected as soon as signal level exceeds threshold. More...
bool	Detected [get]
	If true, voice detected. More...
DateTime	DetectedTime [get]
	Last time when switched to detected state. More...
int	ActivityDelayMs [get, set]
	Keep detected state during this time after signal level dropped below threshold. More...

Events
Action	OnDetected
	Called when switched to detected state. More...
Events inherited from AudioUtil.IVoiceDetector
Action	OnDetected
	Called when switched to detected state. More...

Detailed Description

Simple voice activity detector triggered by signal level.

Member Function Documentation

Process()

abstract T [] Process ( T[]  buf )

pure virtual

Process a frame of data.

Parameters

buf	Buffer containing input data

Returns

Buffer containing output data or null if frame has been discarded (VAD)

Implements IProcessor< T >.

Property Documentation

ActivityDelayMs

int ActivityDelayMs

getset

Keep detected state during this time after signal level dropped below threshold.

Detected

bool Detected

getprotected set

If true, voice detected.

DetectedTime

DateTime DetectedTime

get

Last time when switched to detected state.

On

bool On

getset

If true, voice detection enabled.

Threshold

float Threshold

getset

Voice detected as soon as signal level exceeds threshold.

Event Documentation

OnDetected

Action OnDetected

Called when switched to detected state.