US 12,262,177 B2
Air-pulse generating device producing asymmetric air pulses
Jemm Yue Liang, Sunnyvale, CA (US); Jye Ren, Taipei (TW); and Eldwin Jiaqiang Ng, Sunnyvale, CA (US)
Assigned to xMEMS Labs, Inc., Santa Clara, CA (US)
Filed by xMEMS Labs, Inc., Santa Clara, CA (US)
Filed on May 22, 2023, as Appl. No. 18/321,753.
Application 18/321,753 is a continuation in part of application No. 17/553,806, filed on Dec. 17, 2021, granted, now 11,758,335.
Claims priority of provisional application 63/459,170, filed on Apr. 13, 2023.
Claims priority of provisional application 63/447,835, filed on Feb. 23, 2023.
Claims priority of provisional application 63/447,758, filed on Feb. 23, 2023.
Claims priority of provisional application 63/436,103, filed on Dec. 29, 2022.
Claims priority of provisional application 63/435,275, filed on Dec. 25, 2022.
Claims priority of provisional application 63/434,474, filed on Dec. 22, 2022.
Claims priority of provisional application 63/433,740, filed on Dec. 19, 2022.
Claims priority of provisional application 63/428,085, filed on Nov. 27, 2022.
Claims priority of provisional application 63/354,433, filed on Jun. 22, 2022.
Claims priority of provisional application 63/353,610, filed on Jun. 19, 2022.
Claims priority of provisional application 63/353,588, filed on Jun. 18, 2022.
Claims priority of provisional application 63/347,013, filed on May 30, 2022.
Claims priority of provisional application 63/346,848, filed on May 28, 2022.
Claims priority of provisional application 63/171,281, filed on Apr. 6, 2021.
Claims priority of provisional application 63/143,510, filed on Jan. 29, 2021.
Claims priority of provisional application 63/142,627, filed on Jan. 28, 2021.
Claims priority of provisional application 63/139,188, filed on Jan. 19, 2021.
Claims priority of provisional application 63/138,449, filed on Jan. 17, 2021.
Claims priority of provisional application 63/137,479, filed on Jan. 14, 2021.
Prior Publication US 2023/0292058 A1, Sep. 14, 2023
Int. Cl. H04R 23/00 (2006.01); H04R 1/30 (2006.01); H04R 3/04 (2006.01); H04R 7/06 (2006.01); H04R 17/00 (2006.01)
CPC H04R 23/00 (2013.01) [H04R 1/30 (2013.01); H04R 3/04 (2013.01); H04R 7/06 (2013.01); H04R 17/00 (2013.01); H04R 2217/03 (2013.01)] 27 Claims
OG exemplary drawing
 
1. An air-pulse generating device, comprising:
a film structure, comprising a flap pair, wherein the flap pair comprises a first flap and a second flap opposite to each other;
wherein the film structure is driven to form an amplitude-modulated ultrasonic air pressure variation with an ultrasonic carrier frequency;
wherein the flap pair is driven to form a virtual valve or an opening at a rate synchronous with the ultrasonic carrier frequency;
wherein the air-pulse generating device produces a plurality of air pulses according to the amplitude-modulated ultrasonic air pressure variation, and the plurality of air pulses is asymmetric; wherein the first flap is driven by a first demodulation-driving signal and the second flap is driven by a second demodulation-driving signal, such that the flap pair forms the opening;
wherein the virtual valve is closed corresponding to a period within a first transition time of the first demodulation-driving signal and a second transition time of the second demodulation-driving signal.