US 12,225,340 B2
Wireless earphone, mobile phone and sonic ranging method
ZhiZhong Zhang, Kunshan (CN); QingSong Yu, Kunshan (CN); and RuiBao Liu, Kunshan (CN)
Assigned to LUXSHARE ELECTRONIC TECHNOLOGY (KUNSHAN) LTD., Kunshan (CN)
Filed by LUXSHARE ELECTRONIC TECHNOLOGY (KUNSHAN) LTD., Kunshan (CN)
Filed on Dec. 1, 2022, as Appl. No. 18/073,374.
Claims priority of application No. 202111459996.9 (CN), filed on Dec. 2, 2021.
Prior Publication US 2023/0179904 A1, Jun. 8, 2023
Int. Cl. H04R 1/10 (2006.01); G01S 11/14 (2006.01); G06F 3/16 (2006.01); H04S 7/00 (2006.01)
CPC H04R 1/1041 (2013.01) [G01S 11/14 (2013.01); G06F 3/165 (2013.01); H04S 7/304 (2013.01); H04R 2420/07 (2013.01); H04R 2460/01 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A sonic ranging method for a mobile phone and a wireless earphone, comprising:
the mobile phone performing an acoustic response test on the wireless earphone, comprising:
the mobile phone generating a first audio sequence at a first time slot and plays an audible sound comprising the first audio sequence;
when the wireless earphone recognizes the first audio sequence, the wireless earphone generating a second audio sequence to be played in ambience; and
when the mobile phone recognizes the second audio sequence from the ambience, the mobile phone estimates a length of elapsed time according to a time difference between a current time slot and the first time slot; and
when the mobile phone obtains the length of elapsed time, the mobile phone determining a distance between the wireless earphone and the mobile phone according to a delay compensation parameter and the length of elapsed time; wherein the delay compensation parameter comprises a length of time required by the mobile phone and the wireless earphone to process the first audio sequence and the second audio sequence.