US 11,778,409 B2
Calibration of synchronized audio playback on microphone-equipped speakers
Nahum Noam Weissman, Petach Tikva (IL); Matan Ben-Asher, Neve Monosson (IL); and Itai Neoran, Beit-Hananya (IL)
Assigned to Waves Audio Ltd., Tel Aviv (IL)
Filed by Waves Audio Ltd., Tel Aviv (IL)
Filed on Aug. 15, 2022, as Appl. No. 17/887,531.
Application 17/887,531 is a continuation of application No. 17/063,794, filed on Oct. 6, 2020, granted, now 11,477,596.
Claims priority of provisional application 62/913,183, filed on Oct. 10, 2019.
Prior Publication US 2022/0394417 A1, Dec. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04S 7/00 (2006.01); H04R 1/40 (2006.01)
CPC H04S 7/303 (2013.01) [H04R 1/406 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of synchronizing playing of audio to a listener position, the method performable in an audio system including a first microphone-equipped playback device and a second microphone-equipped playback device, the method comprising:
receiving by the first microphone-equipped playback device an audio stream;
playing the audio stream by on a speaker of the first microphone-equipped playback device, in accordance with a playback delay Δt; and
enabling calibration of the audio system with a first calibration sound originating at the listener position, a second calibration sound originating at the second microphone-equipped playback device, and a third calibration sound originating at the first microphone-equipped playback device;
wherein the playback delay Δt is in accordance with a comparison between second data and third data;
wherein the second data include a generation time of the second calibration sound and an arrival time of the second calibration sound at the first microphone-equipped playback device;
wherein the third data include a generation time of the third calibration sound and an arrival time of the third calibration sound at the second microphone-equipped playback device.