Method of processing a signal in a hearing instrument, and hearing instrument
First Claim
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1. A method of processing a signal in a hearing instrument, the method comprising the steps of:
- calculating a coherence between a plurality of microphone signals or microphone combination signals, wherein the microphone signals or microphone combination signals have different directional characteristics and are measured spatially coincidentally;
determining an attenuation from the coherence; and
applying the attenuation to the signal;
wherein the step of determining the attenuation comprises the sub-steps of calculating, from the coherence, a direct-to-diffuse power ratio, and of determining the attenuation from the direct-to-diffuse power ratio.
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Abstract
A method of processing a signal in a hearing instrument includes calculating a coherence between two microphone signals or microphone combination signals having different directional characteristics, determining an attenuation from the coherence, and applying the attenuation to the signal.
34 Citations
14 Claims
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1. A method of processing a signal in a hearing instrument, the method comprising the steps of:
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calculating a coherence between a plurality of microphone signals or microphone combination signals, wherein the microphone signals or microphone combination signals have different directional characteristics and are measured spatially coincidentally; determining an attenuation from the coherence; and applying the attenuation to the signal; wherein the step of determining the attenuation comprises the sub-steps of calculating, from the coherence, a direct-to-diffuse power ratio, and of determining the attenuation from the direct-to-diffuse power ratio. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A hearing instrument or hearing instrument system, comprising a plurality of microphones and a signal processor in communication with the microphones, the processor being programmed to carry out a method comprising the steps of:
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calculating a coherence between a plurality of microphone signals or microphone combination signals, wherein the microphone signals or microphone combination signals have different directional characteristics and are measured spatially coincidentally; determining an attenuation from the coherence; and applying the attenuation to the signal; wherein the step of determining the attenuation comprises the sub-steps of calculating, from the coherence, a direct-to-diffuse power ratio, and of determining the attenuation from the direct-to-diffuse power ratio. - View Dependent Claims (14)
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Specification