A method and apparatus for controlling the use of discontinuous transmission in a cellular telephone. The preferred embodiment of the present invention includes a voice activity detector for detecting the presence or absence of speech and an energy detector for measuring the energy level...http://www.google.fr/patents/US5737695?utm_source=gb-gplus-shareBrevet US5737695 - Method and apparatus for controlling the use of discontinuous transmission in a cellular telephone
Method and apparatus for controlling the use of discontinuous transmission ...