POSITION DIRECTED ACOUSTIC ARRAY AND BEAMFORMING METHODS
First Claim
1. An adaptive beamforming method for receiving desired sounds, said method comprising:
- determining an occupant position of an occupant engaging in speech within a defined space;
receiving sound from within the defined space with a plurality of microphones;
generating a plurality of audio signals corresponding to the received sound at each of said plurality of microphones; and
applying a beamformer to the audio signals to direct a microphone beam toward the determined occupant position and generate a beamformer output signal.
3 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems are provided for receiving desired sounds. The system includes a position sensor configured to determine an occupant position of an occupant engaging in speech within a defined space and transmit the speaking occupant position. A plurality of microphones are configured to receive sound from within the defined space and transmit audio signals corresponding to the received sound. A processor, in communication with the position sensor and the microphones, is configured to receive the speaking occupant position and the audio signals, apply a beamformer to the audio signals to direct a microphone beam toward the occupant position, and generate a beamformer output signal.
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Citations
20 Claims
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1. An adaptive beamforming method for receiving desired sounds, said method comprising:
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determining an occupant position of an occupant engaging in speech within a defined space; receiving sound from within the defined space with a plurality of microphones; generating a plurality of audio signals corresponding to the received sound at each of said plurality of microphones; and applying a beamformer to the audio signals to direct a microphone beam toward the determined occupant position and generate a beamformer output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for receiving desired sounds, said system comprising:
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a position sensor configured to determine an occupant position of an occupant engaging in speech within a defined space and transmit the speaking occupant position; a plurality of microphones configured to receive sound from within the defined space and transmit audio signals corresponding to the received sound; and a processor in communication with said position sensor and said microphones and configured to receive the speaking occupant position and the audio signals, apply a beamformer to the audio signals to direct a microphone beam toward the determined occupant position, and generate a beamformer output signal. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A vehicle comprising:
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a passenger compartment; an audio system comprising a position sensor configured to determine an occupant position of an occupant engaging in speech within the passenger compartment and transmit the speaking occupant position; a plurality of microphones configured to receive sound from within the defined space and transmit audio signals corresponding to the received sound; a processor in communication with said position sensor and said microphones and configured to receive the speaking occupant position and the audio signals, apply a beamformer to the audio signals to direct a microphone beam toward the occupant position, and generate a beamformer output signal, apply a blocking matrix to each of the audio signals to exclude other positions not associated with the occupant engaging in speech to generate a plurality of blocking matrix output signals corresponding to each of the audio signals, apply an adaptive noise cancellation process to the blocking matrix output signals to generate an adaptive noise cancellation output signal, and sum the beamformer output signal and the adaptive noise cancellation output signal to generate a speaking occupant output signal; and at least one of a speech recognition system and a telephony system in communication with said audio system for receiving said speaking occupant output signal. - View Dependent Claims (17, 18, 19, 20)
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Specification