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US 12,688,845 B2Granted
Microphone array geometry
AssigneeMagic Leap, Inc.
InventorsBenjamin Thomas Vondersaar, Jean-Marc Jot, David Thomas Roach, Mathieu Parvaix
Life of this patent
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Abstract
This disclosure relates in general to microphone arrangement of a wearable head device.
Claims18
A wearable head device, comprising:
- a plurality of first microphones, wherein the plurality of first microphones is co-planar;
- a second microphone, wherein the second microphone is not co-planar with the plurality of first microphones;
- and
- one or more processors configured to perform:
- capturing, with the first microphones and the second microphone, a sound of an environment;
- forming a beamforming pattern, wherein:
- the beamforming pattern comprises a location of the sound of the environment, and
- the beamforming pattern comprises a component that is not co-planar with the plurality of first microphones;
- applying the beamforming pattern on a signal of the captured sound to generate a beamformed signal;
- and
- processing the beamformed signal,
- wherein the one or more processors are configured to further perform:
- generating a first microphone signal based on the sound captured by a microphone of the plurality of first microphones;
- generating a second microphone signal based on the sound captured by the second microphone;
- calculating a magnitude difference, a phase difference, or both between the first and second microphone signals;
- and
- based on the magnitude difference, the phase difference, or both, deriving a coordinate of the sound not co-planar with the plurality of first microphones.
14 more elements
A method of operating a wearable head device, comprising:
- capturing, with a plurality of first microphones and a second microphone, a sound of an environment, wherein:
- the plurality of first microphones is co-planar, and
- the second microphone is not co-planar with the plurality of first microphones;
- forming a beamforming pattern, wherein:
- the beamforming pattern comprises a location of the sound of the environment, and
- the beamforming pattern comprises a component that is not co-planar with the plurality of first microphones;
- applying the beamforming pattern on a signal of the captured sound to generate a beamformed signal;
- processing the beamformed signal;
- and
- generating a first microphone signal based on the sound captured by a microphone of the plurality of first microphones;
- generating a second microphone signal based on the sound captured by the second microphone;
- calculating a magnitude difference, a phase difference, or both between the first and second microphone signals;
- and
- based on the magnitude difference, the phase difference, or both, deriving a coordinate of the sound not co-planar with the plurality of first microphones.
11 more elements
A non-transitory computer-readable medium storing one or more instructions, which, when executed by one or more processors of a wearable head device, cause the wearable head device to perform a method comprising:
- capturing, with a plurality of first microphones and a second microphone, a sound of an environment, wherein:
- the plurality of first microphones is co-planar, and
- the second microphone is not co-planar with the plurality of first microphones;
- forming a beamforming pattern, wherein:
- the beamforming pattern comprises a location of the sound of the environment, and
- the beamforming pattern comprises a component that is not co-planar with the plurality of first microphones;
- applying the beamforming pattern on a signal of the captured sound to generate a beamformed signal;
- processing the beamformed signal;
- generating a first microphone signal based on the sound captured by a microphone of the plurality of first microphones;
- generating a second microphone signal based on the sound captured by the second microphone;
- calculating a magnitude difference, a phase difference, or both between the first and second microphone signals;
- and
- based on the magnitude difference, the phase difference, or both, deriving a coordinate of the sound not co-planar with the plurality of first microphones.
10 more elements
Dependencies are inferred from the claim text.