Patent ID: 9704472
Date: 2017-07-11
CPC Classifications: G10K,H04R

Claim:
1. An integrated circuit for implementing at least a portion of a personal audio device, comprising: a first output for providing a first output signal to a first transducer including both a first source audio signal for playback to a listener and a first anti-noise signal for countering the effect of ambient audio sounds in an acoustic output of the first transducer; a first error microphone input for receiving a first error microphone signal indicative of the output of the first transducer and the ambient audio sounds at the first transducer; a second output for providing a second output signal to a second transducer including both a second source audio signal for playback to the listener and a second anti-noise signal for countering the effect of ambient audio sounds in an acoustic output of the second transducer; a second error microphone input for receiving a second error microphone signal indicative of the output of the second transducer and the ambient audio sounds at the second transducer; and a processing circuit that implements: