US 12,112,737 B1
Acoustic feedback control
Wan-Chieh Pai, San Jose, CA (US); Harsha Inna Kedage Rao, Campbell, CA (US); and Andrew Jackson Stockton X, Boston, MA (US)
Assigned to Amazon Technologies, Inc., Seattle, WA (US)
Filed by Amazon Technologies, Inc., Seattle, WA (US)
Filed on Sep. 28, 2022, as Appl. No. 17/954,815.
Int. Cl. G10K 11/178 (2006.01); H04R 3/02 (2006.01)
CPC G10K 11/17854 (2018.01) [H04R 3/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computer-implemented method, the method comprising:
generating, by a loudspeaker of an in-ear device, first output audio using first playback audio data;
generating, using a first microphone of the in-ear device, first audio data including a representation of the first output audio and a first representation of environmental noise;
generating, using the first audio data and the first playback audio data, second audio data, the generating comprising:
determining first coefficient data associated with an adaptive filter,
determining reference audio data using the first playback audio data and the first coefficient data, and
generating the second audio data by subtracting the reference audio data from the first audio data;
determining that first acoustic feedback is represented in a portion of the second audio data, the portion of the second audio data associated with a first frequency range;
generating, using the second audio data and a first filter associated with the first frequency range, third audio data including a second representation of the environmental noise; and
generating, by the loudspeaker, second output audio based on the third audio data.