A cellular telephone handset stores audio files previously recorded by the user and selectively transmitted to the remote listener at a time when it is inappropriate for the handset user to speak, such as when an incoming call arrives when the user in a meeting or theater. In addition, a designated recorded...http://www.google.de/patents/US6816577?utm_source=gb-gplus-sharePatent US6816577 - Cellular telephone with audio recording subsystem
