US 11,721,351 B2
Remote audio pickup and noise cancellation system and method
Jan Larsen, Hudson, WI (US)
Assigned to BBY Solutions, Inc., Richfield, MN (US)
Filed by BBY Solutions, Inc., Richfield, MN (US)
Filed on Nov. 4, 2021, as Appl. No. 17/519,243.
Application 17/519,243 is a continuation of application No. 16/712,273, filed on Dec. 12, 2019, granted, now 11,170,798.
Claims priority of provisional application 62/778,389, filed on Dec. 12, 2018.
Prior Publication US 2022/0059113 A1, Feb. 24, 2022
Int. Cl. G10L 21/0216 (2013.01); G10L 15/22 (2006.01); H04R 3/00 (2006.01)
CPC G10L 21/0216 (2013.01) [G10L 15/22 (2013.01); H04R 3/005 (2013.01); G10L 2021/02165 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system with voice control comprising:
a) a housing;
b) a speaker mounted in the housing;
c) an amplifier that feeds an amplified audio signal to the speaker;
d) a first microphone mounted on the housing proximal to the speaker, the first microphone providing a first signal;
e) a second microphone mounted on the housing providing a second signal; and
f) circuitry receiving the first signal and the second signal, wherein the circuitry:
i) alters a first magnitude of one of the first signal and the second signal so as to approximately match a second magnitude of the other signal;
ii) subtracts the first signal from the second signal to create an improved voice signal; and
iii) submits the improved voice signal to a voice recognition system.
 
11. A system with voice control comprising:
a) a housing;
b) a speaker mounted in the housing that outputs an amplified audio signal;
c) a tune pipe cavity at least partially formed in the housing;
d) a microphone mounted in the tune pipe cavity, wherein the tune pipe cavity is configured to have a length, diameter, and volume that creates an acoustic filter for incoming sound to the microphone that filters out some frequencies not associated with human speech; and
e) circuitry receiving a microphone signal from the microphone and submits the microphone signal to a voice recognition system.