US 11,863,930 B2
Apparatus, system, and method of Acoustic Feedback (AFB) mitigation
Tzvi Fridman, Nes Tziona (IL); Sivan Grotas Mussan, Rishon Lezion (IL); Yael Ronen, Ness Tziona (IL); and Nikolaos Zafeiropoulos, Athens (GR)
Assigned to SILENTIUM LTD., Nes Ziona (IL)
Filed by SILENTIUM LTD., Nes Ziona (IL)
Filed on Feb. 9, 2023, as Appl. No. 18/166,622.
Claims priority of provisional application 63/308,708, filed on Feb. 10, 2022.
Prior Publication US 2023/0254633 A1, Aug. 10, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04R 1/24 (2006.01); H04R 3/04 (2006.01); H04R 1/08 (2006.01)
CPC H04R 1/24 (2013.01) [H04R 1/08 (2013.01); H04R 3/04 (2013.01)] 25 Claims
OG exemplary drawing
 
1. An apparatus comprising:
an Acoustic Feedback (AFB) mitigator configured to mitigate AFB between an acoustic transducer and an acoustic sensor, the AFB mitigator comprising:
a first filter configured to generate a first filtered signal by filtering a first input signal, the first input signal based on a transducer acoustic pattern to be output by the acoustic transducer; and
a second filter configured to generate a second filtered signal by filtering the first input signal, wherein the second filter comprises an adaptive filter, which is adapted based on a difference between an AFB-mitigated signal and the second filtered signal, wherein the AFB-mitigated signal is based on a difference between a second input signal and the first filtered signal, wherein the second input signal is based on a sensor acoustic pattern sensed by the acoustic sensor.