Electronic apparatus having microphones with controllable front-side gain and rear-side gain
AssigneeMotorola Mobility LLC
InventorsRobert Zurek, Kevin Bastyr, Joel Clark, Plamen Ivanov
Life of this patent
Estimating the term…
Abstract
An electronic apparatus is provided that has a rear-side and a front-side, a first microphone that generates a first signal, and a second microphone that generates a second signal. An automated balance controller generates a balancing signal based on an imaging signal. A processor processes the first and second signals to generate at least one beamformed audio signal, where an audio level difference between a front-side gain and a rear-side gain of the beamformed audio signal is controlled during processing based on the balancing signal.
Claims18
An electronic apparatus having a rear-side and a front-side, the electronic apparatus comprising:
- a first microphone that generates a first signal;
- a second microphone that generates a second signal;
- a third microphone that generates a third signal;
- an automated balance controller that generates a balancing signal based on an imaging signal;
- and
- a processor, coupled to the first microphone, the second microphone, the third microphone, and the automated balance controller, that processes the first signal, the second signal, and the third signal to generate:
- a left-front-side beamformed audio signal having a first major lobe with a left-front-side gain,
- a right-front-side beamformed audio signal having a second major lobe with a right-front-side gain, and
- a third beamformed audio signal having a third rear-side gain,
- wherein an audio level difference between the third rear-side gain and both the right-front-side gain and the left-front-side gain is controlled based on the balancing signal.
A method for processing a first microphone signal, second microphone signal, and a third microphone signal comprising:
- generating a balancing signal based on an imaging signal;
- and
- processing the first microphone signal, the second microphone signal, and the third microphone signal to generate:
- a left-front-side beamformed audio signal having a first major lobe with a left-front-side gain,
- a right-front-side beamformed audio signal having a second major lobe with a right-front-side gain, and
- a third beamformed audio signal with a third rear-side gain,
- wherein an audio level difference the third rear-side gain and both the right-front-side gain and the left-front-side gain is controlled based on the balancing signal.
Dependencies are inferred from the claim text.