Patent ID: 9184791
Filing Date: 2015-11-10
Classification: H04B,H04M

Abstract:
1. An audio processing device, comprising: a handheld body configured to be selectively held to either one of a first side of a speaker's face and a second side of the speaker's face; an ambient sound microphone positioned on the handheld body to detect ambient sound and configured to produce an ambient sound signal based upon detected ambient sound; a voice microphone positioned asymmetrically on the handheld body relative to a centerline of the handheld body as the handheld body is held to the speaker's face, the voice microphone being located at a farther distance from a speaker's mouth when the handheld body is held to the first side of the speaker's face than when held to the second side of the speaker's face, the voice microphone configured to produce a voice signal; and an adaptive sound cancellation processor, communicatively coupled to the ambient sound microphone and the voice microphone, the adaptive sound cancellation processor configured to: receive an orientation indication indicating that an expected orientation of the handheld body is being held to one of the first side of the speaker's face and the second side of the speaker's face; and adaptively reduce ambient sound, corresponding to the ambient sound signal, from the voice signal by applying a variable sound cancellation algorithm,