US 12,112,738 B2
Headphone with multiple reference microphones ANC and transparency
Hanchi Chen, San Jose, CA (US); Sarthak Khanal, Santa Clara, CA (US); Yang Lu, San Jose, CA (US); Vladan Bajic, San Francisco, CA (US); and Esge B. Andersen, Campbell, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Aug. 16, 2023, as Appl. No. 18/450,942.
Application 18/450,942 is a continuation of application No. 17/901,779, filed on Sep. 1, 2022, granted, now 11,741,939.
Application 17/901,779 is a continuation of application No. 17/022,954, filed on Sep. 16, 2020, granted, now 11,437,012, issued on Sep. 6, 2022.
Prior Publication US 2024/0046913 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G10K 11/178 (2006.01); H04R 3/00 (2006.01)
CPC G10K 11/17881 (2018.01) [G10K 11/17854 (2018.01); H04R 3/005 (2013.01); G10K 2210/3028 (2013.01); H04R 2201/10 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A headphone comprising:
an ear cup housing having an outside face, an inside face and a perimeter sidewall, the perimeter sidewall is between the outside face and the inside face;
at least three external microphones integrated in the ear cup housing that are disposed on the perimeter sidewall of the ear cup housing;
an internal microphone and a speaker that are disposed on the inside face of the ear cup housing; and
processing circuitry configured to i) drive the speaker for acoustic noise cancellation by processing a) at least one external microphone signal from the at least three external microphones and b) an internal microphone signal from the internal microphone, and ii) drive the speaker for transparency by processing at least one external microphone signal from the at least three external microphones.