Process for voice activity detection in a signal, and speech signal coder comprising a device for carrying out the process

摘要

Each signal frame is designated as either voice or noise frames. A frame is designated as voice frame when energy of the current frame is greater than the energy of the previous frame. The frame is designated as noise frame when the characteristics of the current frame correspond to noise characteristics for specific consecutive frames. ??An Independent claim is included for voice signal coder including voice activity detector.