enableVAD method
Enables or disables Voice Activity Detection (VAD).
VAD detects when speech is present and can be used to reduce bandwidth by not transmitting audio during silence.
Parameters:
enable: Whether to enable VAD (default: true)
Returns 0 on success, negative error code on failure.
Implementation
Future<int> enableVAD({required bool enable}) async {
throw UnimplementedError('enableVAD has not been implemented.');
}