公开(公告)号：US20190103849A1

公开(公告)日：2019-04-04

申请号：US16058885

申请日：2018-08-08

Applicant: Google LLC

Inventor： Benjamin Louis Shaya ,  Rasmus Larsen ,  Richard F Lyon ,  Michael Smedegaard

IPC: H03G5/16 ,  H04R29/00 ,  H04R1/40 ,  H04R3/00 ,  H04R3/04 ,  G06F3/16

CPC classification number: H03G5/165 ,  G06F3/167 ,  G06N3/04 ,  H04R1/403 ,  H04R1/406 ,  H04R3/005 ,  H04R3/04 ,  H04R3/12 ,  H04R29/001 ,  H04R2420/07 ,  H04R2430/03 ,  H04S7/301 ,  H04S7/305 ,  H04S2420/07

Abstract: The various implementations described herein include methods, devices, and systems for automatic audio equalization. In one aspect, a method is performed at an electronic device that includes speakers, microphones, processors and memory. The electronic device outputs audio user content from the speakers and automatically equalizes subsequent audio output of the device without user input. The automatic equalization includes: (1) obtaining audio content signals, including receiving outputted audio content at each microphone; (2) determining from the audio content signals phase differences between microphones; (3) obtaining a feature vector based on the phase differences; (4) obtaining a frequency correction from a correction database based on the obtained feature vector; and (5) applying the obtained frequency correction to the subsequent audio output.