US 12,412,420 B2
Apparatus, systems, and methods for microphone gain control for electronic user devices
Tigi Thomas, Bangalore (IN)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Jun. 25, 2021, as Appl. No. 17/358,894.
Prior Publication US 2021/0318850 A1, Oct. 14, 2021
Int. Cl. G06V 40/16 (2022.01); G06F 3/00 (2006.01); G06F 3/01 (2006.01); G10L 21/0356 (2013.01)
CPC G06V 40/168 (2022.01) [G06F 3/005 (2013.01); G06F 3/013 (2013.01); G10L 21/0356 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
at least one memory;
machine-readable instructions; and
at least one processor circuit to execute the machine-readable instructions to:
determine a first proximity value representing a first distance of a user to a user device based on a first image generated via one or more cameras associated with the user device, the first image corresponding to a first time;
determine a second proximity value representing a second distance of the user to the user device based on a second image generated via the one or more cameras, the second image corresponding to a second time after the first time;
apply a first filtering parameter to the second proximity value to generate a weighted second proximity value;
apply a second filtering parameter to the first proximity value to generate a weighted first proximity value, a value of the second filtering parameter adjusted based on the first filtering parameter;
determine a filtered proximity value corresponding to the second time based on (a) the weighted first proximity value and (b) the weighted second proximity value;
determine an amount of gain to be applied to an audio signal generated by a microphone associated with the user device based on the filtered proximity value; and
cause an amplifier of the user device to apply the gain to the audio signal.