Gopro, Inc.

Altigen Communications, Inc.

Hakim Mesiwala

Erich Tisch

Eric Penrod

Timothy Dick

Mark Hardin

Yi Zhang

William Edward MacDonald

Devices and methods for determining a direction of audio arrival from Ambisonics channels using azimuth and elevation segments is described herein. A method includes generating multiple blocks of samples from Ambisonics signals for a time interval, determining an azimuth angle estimate and an elevation angle estimate for the time interval when a defined number of blocks in the multiple blocks of samples are valid, generating the azimuth angle estimate based on maximum number of azimuth angle estimates present in an azimuth segment amongst a defined number of azimuth segments, and generating the elevation angle estimates based on maximum number of elevation angle estimates present in an elevation segment amongst a defined number of elevation segments, where the direction of arrival of the Ambisonics signals is based on the azimuth angle estimate and the elevation angle estimate.

Direction of audio arrival from Ambisonics channels using azimuth and elevation segments

An image capture device reduces noise floor using multiple microphones. The image capture device includes a processor that obtains a front microphone signal from a front microphone, the front microphone signal having a noisy noise floor portion, obtains a rear microphone signal from a rear microphone, sets a splice point based on mitigation of the noisy noise floor portion relative to a speech frequency range, and combines a substantially clean noise floor portion of the rear microphone signal at or below the splice point with a remaining portion of the front microphone signal above the splice point to generate a microphone signal.

Multi-microphone noise floor mitigation

An image capture device includes a sensor, a microphone array, and a processor. The microphone array may include a first microphone, a second microphone, a third microphone, or any combination thereof. The first microphone may be configured to face a first direction. The second microphone may be configured to face a second direction. The second direction may be diametrically opposed to the first direction. The third microphone may be configured to face a third direction. The third direction may be substantially perpendicular to the first direction, the second direction, or both. The processor may be configured to determine a microphone capture pattern and detect wind noise. The microphone capture pattern may be determined based on data obtained from the sensor. The sensor data may include image data, audio data, image capture device orientation data, location data, accelerometer data, or any combination thereof.

Method and apparatus for wind noise detection and beam pattern processing

A method for operating a telecommunications server includes receiving a plurality of data packets, each data packet including an associated chronological time stamp, storing the plurality of data packets in a first buffer, determining a first data packet from the plurality of data packets indicating a lead data packet, the first data packet stored in a first location in the first buffer, determining a timing offset in response to a chronological time stamp associated with the first data packet and a pre-determined session time stamp, storing a portion of the first data packet at a first location in a second buffer, the first location associated with the pre-determined session time stamp, retrieving a second data packet from the plurality of data packets in a second location in the first buffer, determining a session time stamp associated with the second data packet in response to a chronological time stamp associated with the second data packet and to the timing offset, storing a portion of the second data packet at a second location in the second buffer, the second location associated with the session time stamp associated with the second data packet, and retrieving the portion of the first data packet from the second buffer.

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Cupertino, CA, United States of America

Hakim Mesiwala