公开(公告)号：US20190058952A1

公开(公告)日：2019-02-21

申请号：US16029314

申请日：2018-07-06

Applicant: Apple Inc.

Inventor： Ismael H. NAWFAL ,  Joshua D. ATKINS ,  Stephen J. NIMICK ,  Guy C. NICHOLSON ,  Jason M. HARLOW

IPC: H04R5/04 ,  H04R5/027 ,  H04R5/033

Abstract: Digital audio signal processing techniques used to provide an acoustic transparency function in a pair of headphones. A number of transparency filters can be computed at once, using optimization techniques or using a closed form solution, that are based on multiple re-seatings of the headphones and that are as a result robust for a population of wearers. In another embodiment, a transparency hearing filter of a headphone is computed by an adaptive system that takes into consideration the changing acoustic to electrical path between an earpiece speaker and an interior microphone of that headphone while worn by a user. Other embodiments are also described and claimed.