An analog voice signal is encoded for playback in a form in which the identity of the speaker's voice is disguised. To do this, the analog voice signal is converted to a first digital voice signal which is divided into a plurality of sequential speech segments. A plurality of voice fonts, for different...http://www.google.fr/patents/US5911129?utm_source=gb-gplus-shareBrevet US5911129 - Audio font used for capture and rendering
