Microsoft DirectX 8.0 (C++)

Voice Activation

With voice activated transmission control, the microphone input is constantly analyzed to determine if the user is speaking. Voice activation has two benefits. It does not require the user to do anything more than speak into the microphone. Also, it is easily coded because it requires only setting the dwFlags parameter of the DVCLIENTCONFIG structure to DVCLIENTCONFIG_AUTOVOICEACTIVATED when the voice session is connected.