NOISE-CANCELLATION SYSTEM AND METHOD FOR NOISE CANCELLATION
First Claim
1. Noise-cancellation system for a headphone (HP), which comprises a speaker (200, 210) for emitting a speaker signal, a microphone (300, 310, 320, 330) for receiving a microphone signal and a proximity sensor (400, 410) for receiving a proximity signal that comprises quantitative information regarding a distance of an object (OBJ) from the proximity sensor (400, 410), the noise-cancellation system comprising a signal processing device (100), which is designedto generate a compensation signal based on the microphone signal, wherein the generation of the compensation signal comprises filtering with an adjustable filter characteristic;
- to combine the compensation signal with an audio signal in order to generate the speaker signal; and
to adapt the filter characteristic based on the distance.
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Accused Products
Abstract
A noise-cancellation system for a headphone (HP) that comprises a speaker (200, 210) for emitting a speaker signal, a microphone (300, 310, 320, 330) for receiving a microphone signal and a proximity sensor (400, 410) for a receiving a proximity signal comprising quantitative information on the distance of the an object (OBJ) from the proximity sensor (400, 410) has a signal processing device (100). The signal processing device (100) is designed to generate a compensation signal based on the microphone signal, wherein the generation of the compensation signal comprises filtering with an adjustable filter characteristic. The compensation signal is combined with an audio signal in order to generate the speaker signal. The filter characteristic is adapted based on the distance.
44 Citations
15 Claims
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1. Noise-cancellation system for a headphone (HP), which comprises a speaker (200, 210) for emitting a speaker signal, a microphone (300, 310, 320, 330) for receiving a microphone signal and a proximity sensor (400, 410) for receiving a proximity signal that comprises quantitative information regarding a distance of an object (OBJ) from the proximity sensor (400, 410), the noise-cancellation system comprising a signal processing device (100), which is designed
to generate a compensation signal based on the microphone signal, wherein the generation of the compensation signal comprises filtering with an adjustable filter characteristic; -
to combine the compensation signal with an audio signal in order to generate the speaker signal; and to adapt the filter characteristic based on the distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Method for noise cancellation for a headphone (HP) that comprises a speaker (200, 210) for emitting a speaker signal, a microphone (300, 310, 320, 330) for receiving a microphone signal and a proximity sensor (400, 410) for receiving a proximity signal that comprises quantitative information regarding a distance of an object (OBJ) from the proximity sensor (400, 410), the method comprising:
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generation of a compensation signal based on the microphone signal, wherein the generation of the compensation signal comprises filtering with an adjustable filter characteristic; combining the compensation signal with an audio signal in order to generate the speaker signal; and adapting the filter characteristic based on the distance. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification