Apparatus and method of active noise cancellation in a personal listening device
First Claim
1. A personal listening device (PLD) comprising:
- an earphone housing having therein (a) an inertial sensor to detect motion of the PLD and to generate a motion signal, (b) a pressure sensor to detect compression of a portion of the PLD and to generate pressure sensor signal, and (c) a speaker to receive an anti-noise signal and a desired audio signal from an electronic device; and
an active noise control (ANC) system to generate the anti-noise signal as being one of a first anti-noise signal or a second anti-noise signal, the ANC system includesa processor,a vibration detector coupled to the processor, the vibration detector to detect a vibration of the PLD based on at least one of the motion signal or the pressure sensor signal, andan ANC anti-noise generator coupled to the processor, the ANC anti-noise generator to generate the first anti-noise signal when vibrations are not detected by the vibration detector, and to generate the second anti-noise signal when vibrations are detected by the vibration detector, the second anti-noise signal being based on detected vibrations,wherein the processor reconfigures the ANC system for the ANC anti-noise generator to generate the second anti-noise signal.
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Accused Products
Abstract
Personal listening device (PLD) includes earphone housing having therein (a) inertial sensor to detect motion of PLD and to generate motion signal, (b) pressure sensor to detect compression of portion of PLD and to generate pressure sensor signal, and (c) speaker to receive anti-noise signal and desired audio signal from electronic device, and active noise control (ANC) system to generate anti-noise signal as being one of first or second anti-noise signal. ANC system includes processor, vibration detector to detect vibration of the PLD based on at least one of motion signal or pressure sensor signal, and ANC anti-noise generator to generate first anti-noise signal when vibrations are not detected by vibration detector, and to generate second anti-noise signal when vibrations are detected by vibration detector. Second anti-noise signal is based on detected vibrations. Processor reconfigures ANC system for ANC anti-noise generator to generate second anti-noise signal. Other embodiments are described.
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Citations
21 Claims
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1. A personal listening device (PLD) comprising:
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an earphone housing having therein (a) an inertial sensor to detect motion of the PLD and to generate a motion signal, (b) a pressure sensor to detect compression of a portion of the PLD and to generate pressure sensor signal, and (c) a speaker to receive an anti-noise signal and a desired audio signal from an electronic device; and an active noise control (ANC) system to generate the anti-noise signal as being one of a first anti-noise signal or a second anti-noise signal, the ANC system includes a processor, a vibration detector coupled to the processor, the vibration detector to detect a vibration of the PLD based on at least one of the motion signal or the pressure sensor signal, and an ANC anti-noise generator coupled to the processor, the ANC anti-noise generator to generate the first anti-noise signal when vibrations are not detected by the vibration detector, and to generate the second anti-noise signal when vibrations are detected by the vibration detector, the second anti-noise signal being based on detected vibrations, wherein the processor reconfigures the ANC system for the ANC anti-noise generator to generate the second anti-noise signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of active noise cancellation in a personal listening device (PLD) comprising:
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receiving by an active noise control (ANC) system a reference microphone acoustic signal and an error microphone acoustic signal from the PLD; receiving by the ANC system at least one of a motion signal or a pressure sensor signal from the PLD, wherein the motion signal is based on a detected motion of the PLD and the pressure sensor signal is based on a detected compression of a portion of the PLD; determining by the ANC system whether vibrations of the PLD are detected based on at least one of the motion signal or the pressure sensor signal; when vibrations are not detected, generating by the ANC system a first anti-noise signal based on the reference microphone acoustic signal and the error microphone acoustic signal; and when vibrations are detected, generating by the ANC system a second anti-noise signal, wherein generating by the ANC system the second anti-noise signal includes reconfiguring the ANC system. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A computer-readable non-transitory storage medium having stored therein instructions, when executed by a processor, causes an active noise control (ANC) system to perform a method of active noise cancellation in a personal listening device (PLD), the method comprising:
- receiving a reference microphone acoustic signal and an error microphone acoustic signal from the PLD;
receiving at least one of a motion signal or a pressure sensor signal from the PLD, wherein the motion signal is based on a detected motion of the PLD and the pressure sensor signal is based on a detected compression of a portion of the PLD;
determining whether vibrations of the PLD are detected based on at least one of the motion signal or the pressure sensor signal;
when vibrations are not detected, generating a first anti-noise signal based on the reference microphone acoustic signal and the error microphone acoustic signal; and
when vibrations are detected, generating a second anti-noise signal, wherein the processor reconfigures the ANC system to generate the second anti-noise signal. - View Dependent Claims (20, 21)
- receiving a reference microphone acoustic signal and an error microphone acoustic signal from the PLD;
Specification