Patent ID: 8682014
Filing Date: 2014-03-25
Classification: H04M,H04R

Abstract:
1. A portable audio device comprising: a voice coil audio signal processor coupled to receive desired audio content, wherein the voice coil audio signal processor comprises an audio signal processing chain whose output signal is combined with an anti-noise signal produced by an active noise cancellation block to yield a combined audio signal; a telecoil audio signal processor coupled to receive the desired audio content and produce a telecoil signal; a voice coil amplifier having an input coupled to an output of the voice coil audio signal processor to amplify the combined audio signal in accordance with a volume setting; a speaker coupled to an output of the voice coil amplifier; a telecoil amplifier having an input coupled to an output of the telecoil audio signal processor to amplify the telecoil signal in accordance with a telecoil coupling strength setting; and a telecoil coupled to an output of the telecoil amplifier.