US 11,743,642 B2
Microphone assembly with free fall detection
John Albers, Chicago, IL (US)
Assigned to KNOWLES ELECTRONICS, LLC., Itasca, IL (US)
Appl. No. 17/602,916
Filed by Knowles Electronics, LLC, Itasca, IL (US)
PCT Filed Apr. 3, 2020, PCT No. PCT/US2020/026532
§ 371(c)(1), (2) Date Oct. 11, 2021,
PCT Pub. No. WO2020/210120, PCT Pub. Date Oct. 15, 2020.
Claims priority of provisional application 62/832,944, filed on Apr. 12, 2019.
Prior Publication US 2022/0182759 A1, Jun. 9, 2022
Int. Cl. H04R 3/00 (2006.01); H04R 29/00 (2006.01); H04R 1/00 (2006.01); H04R 1/08 (2006.01)
CPC H04R 3/007 (2013.01) [H04R 1/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A microphone assembly comprising:
an acoustic transducer configured to generate an analog signal in response to pressure changes sensed by the acoustic transducer, the analog signal comprising frequency components below a threshold frequency;
an integrated circuit electrically coupled to the acoustic transducer and configured to:
determine a characteristic of frequency components below the threshold frequency;
determine whether the characteristic of the frequency components corresponds to a fall event; and
generate an output signal in response to a determination that the characteristic of the frequency components corresponds to the fall event; and
a housing having an external device interface with electrical contacts, the acoustic transducer and the integrated circuit disposed within the housing, the integrated circuit electrically coupled to contacts of the external device interface.