Class SimpleVad

A minimal, adaptive voice activity detector operating on time-domain PCM. Supports float [-1,1] and 16-bit samples, with per-call adaptation to input frequency and channel count. Multi-channel input is downmixed to mono.

Inheritance

System.Object

SimpleVad

Namespace: Adrenak.UniVoice

Assembly: cs.temp.dll.dll

Syntax

public class SimpleVad

Remarks

The detector emits OnVadChanged when the speaking state toggles. Timings (attack, release, gaps) are maintained in milliseconds and remain stable across sample-rate changes.

Constructors

SimpleVad(SimpleVad.Config)

Initializes a new instance of SimpleVad.

Declaration

public SimpleVad(SimpleVad.Config config = null)

Parameters

Type	Name	Description
SimpleVad.Config	config	Optional configuration. If null, defaults are used.

Properties

IsSpeaking

Current speaking state.

Declaration

public bool IsSpeaking { get; }

Property Value

Type	Description
System.Boolean

Methods

Process(Int32, Int32, Int16[])

Convenience overload for processing fully-filled 16-bit buffers.

Declaration

public void Process(int frequency, int channels, short[] samples)

Parameters

Type	Name	Description
System.Int32	frequency	Input sample rate in Hz.
System.Int32	channels	Number of interleaved channels.
System.Int16[]	samples	Buffer containing interleaved sample data.

Process(Int32, Int32, Int16[], Int32)

Processes interleaved 16-bit PCM with adaptive handling of frequency and channels. Multi-channel input is downmixed to mono via averaging.

Declaration

public void Process(int frequency, int channels, short[] samples, int count)

Parameters

Type	Name	Description
System.Int32	frequency	Input sample rate in Hz. If 0, a default is used.
System.Int32	channels	Number of interleaved channels. If 0, treated as 1.
System.Int16[]	samples	Buffer containing interleaved sample data.
System.Int32	count	Number of elements from samples to process.

Process(Int32, Int32, Single[])

Convenience overload for processing fully-filled float buffers.

Declaration

public void Process(int frequency, int channels, float[] samples)

Parameters

Type	Name	Description
System.Int32	frequency	Input sample rate in Hz.
System.Int32	channels	Number of interleaved channels.
System.Single[]	samples	Buffer containing interleaved sample data.

Process(Int32, Int32, Single[], Int32)

Processes interleaved float PCM in the range [-1, 1] with adaptive handling of frequency and channels. Multi-channel input is downmixed to mono via averaging.

Declaration

public void Process(int frequency, int channels, float[] samples, int count)

Parameters

Type	Name	Description
System.Int32	frequency	Input sample rate in Hz.
System.Int32	channels	Number of interleaved channels. If 0, treated as 1 (mono).
System.Single[]	samples	Buffer containing interleaved sample data.
System.Int32	count	Number of elements from samples to process.

Reset(Boolean)

Resets internal state and timers.

Declaration

public void Reset(bool isSpeaking = false)

Parameters

Type	Name	Description
System.Boolean	isSpeaking	Initial speaking state after reset.

Events

OnVadChanged

Raised when the VAD speaking state changes. The event argument is true when entering the speaking state, and false when exiting.

Declaration

public event Action<bool> OnVadChanged

Event Type

Type	Description
System.Action<System.Boolean>