Detect Presence of Speech

This model uses the Voice Activity Detector block to visualize the probability of speech presence in an audio signal.

To explore this model, tune the Probability of transition from a silence frame to a speech frame and Probability of transition from a speech frame to a silence frame parameters of the Voice Activity Detector (VAD) and observe the effect on the speech presence probability.

The Time Scope blocks plots the audio signal and associated voice activity probability.