公开(公告)号：US10891933B2

公开(公告)日：2021-01-12

申请号：US16561106

申请日：2019-09-05

Applicant: NXP B.V.

Inventor： Fre Jorrit Jorritsma ,  Quino Sandifort ,  Albertus de Man ,  Mattheus Johan Koerts

IPC: G10K11/178 ,  H03F3/181 ,  H03F3/217 ,  H04R9/06 ,  H04R29/00

Abstract: An audio processing system is described including an amplifier configured to receive a first audio signal and output the first audio signal to an acoustic transducer comprising a voice coil. A sensor detects a signal corresponding to voice coil current of the acoustic transducer. A controller compares the first audio signal and the detected signal and determines a second audio signal from the comparison. The second audio signal is representative of an external sound source detected via the acoustic transducer. The audio processing system may simultaneously output the first audio signal and receive the second audio signal using the same acoustic transducer.