Apparatus, systems, and methods for microphone gain control for electronic user devices

An apparatus comprising:

• means for detecting a face of a user in a first video frame corresponding to a first time and in a second video frame corresponding to a second time after the first time, the first video frame and the second video frame associated with a video stream generated by a camera, the camera associated with a user device;
• means for identifying first facial landmarks in the face in the first video frame and second facial landmarks in the face in the second video frame;
• means for determining proximity to:
• determine a first proximity value representing a first distance of the user relative to the camera based on the first facial landmarks;
• determine a second proximity value representing a second distance of the user relative to the camera based on the second facial landmarks;
• 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;
• and
• 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;
• means for determining a gain to be applied to an audio signal based on the filtered proximity value, the audio signal to be generated by a microphone associated with the user;
• means for filtering the audio signal to (a) permit first frequencies associated with a voice band and (b) remove second frequencies associated with ambient noise;
• and
• means for controlling to cause an amplifier of the user device to apply the gain to the filtered audio signal.

At least one non-transitory computer readable storage medium comprising machine-readable instructions to cause at least one processor circuit to at least:

• 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, the first image associated with 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 associated with a second time, the 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 the weighted first proximity value and 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;
• filter the audio signal to (a) permit first frequencies associated with a voice band and (b) remove second frequencies associated with ambient noise;
• and
• cause an amplifier of the user device to apply the gain to the filtered audio signal.