Patent ID: 8238570
Filing Date: 2012-08-07
Classification: H04R

Abstract:
1. A personal acoustic device comprising: a first casing structured to be positioned adjacent an ear of a user; a second casing structured to be positioned away from both ears of the user; a first movement sensor disposed on a portion of the personal acoustic device that includes the first casing and that is structured to be worn on the user's head to enable the first movement sensor to detect movements of the user's head at a time when the personal acoustic device is in position on the user's head such that the first casing is adjacent an ear of the user; a second movement sensor disposed on the second casing to provide a reference against which to compare movements detected by the first movement detector; and a control circuit coupled to the first and second movement sensors, and structured to: further comprising a connector disposed on the second casing to couple the personal acoustic device to an intercom system of a vehicle such that the reference comprises the vehicle at times when the connector is coupled to the intercom system.