Howtosignalprocessing
What is the purpose of voice activity detection in speech systems?
VAD, also known as speech detection, aims to detect the presence or absence of speech and differentiates speech from non-speech sections. It is important in a variety of speech-based applications, especially in speech coding and speech recognition.
How does Webrtc VAD work?
Webrtc splits audio into frames, each frame has corresponding number (0 or 1). We use 30ms frames for webrtc, so each 250 ms chunk is split into 8 frames, their mean value is used as a treshold for plot.
