A combination hat and headset device (the "hatset") for improved comfort, hygiene, and consistent microphone placement. The headset is a combination of speaker(s) or microphone(s) for use in communicating with some other system, such as a telephone or computer system. The hat supports the weight of the...http://www.google.es/patents/US20020131616?utm_source=gb-gplus-sharePatente US20020131616 - Apparatus and methods for sound reproduction and recording
Apparatus and methods for sound reproduction and recording
