Noise removal for electronic device with far field microphone on console
First Claim
1. A method for reduction of noise in a device having a console with one or more microphones and a source of narrow band distributed noise located on the console, the method comprising:
- obtaining a signal from the one or more microphones containing a broad band distributed desired sound and narrow band distributed noise from the source located on the console;
dividing the signal amongst a plurality of frequency bins;
for each frequency bin, determining whether a portion of the signal within the frequency bin belongs to a narrow band distribution characteristic of the source of narrow band noise located on the console by generating a feature vector from a logarithm of a power-spectrum of the signal and comparing the feature vector against a pre-trained model; and
filtering from the signal any frequency bins containing portions of the signal belonging to the narrow band distribution.
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Accused Products
Abstract
Reduction of noise in a device having a console with one or more microphones and a source of narrow band distributed noise located on the console is disclosed. A microphone signal containing a broad band distributed desired sound and narrow band distributed noise is divided amongst a plurality of frequency bins. For each frequency bin, it is determined whether a portion of the signal within the frequency bin belongs to a narrow band distribution characteristic of the source of narrow band noise located on the console. Any frequency bins containing portions of the signal belonging to the narrow band distribution are filtered to reduce the narrow band noise.
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Citations
21 Claims
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1. A method for reduction of noise in a device having a console with one or more microphones and a source of narrow band distributed noise located on the console, the method comprising:
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obtaining a signal from the one or more microphones containing a broad band distributed desired sound and narrow band distributed noise from the source located on the console; dividing the signal amongst a plurality of frequency bins;
for each frequency bin, determining whether a portion of the signal within the frequency bin belongs to a narrow band distribution characteristic of the source of narrow band noise located on the console by generating a feature vector from a logarithm of a power-spectrum of the signal and comparing the feature vector against a pre-trained model; andfiltering from the signal any frequency bins containing portions of the signal belonging to the narrow band distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electronic device, comprising:
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a console; one or more microphones located on the console; a source of narrow band distributed noise located on the console; a processor coupled to the microphone; a memory coupled to the processor, the memory having embodied therein a set of processor readable instructions for implementing a method for reduction of noise, the processor readable instructions including; instructions which, when executed, cause the device to obtain a signal from the one or more microphones containing a broad band distributed desired sound and narrow band distributed noise from the source located on the console by generating a feature vector from a logarithm of a power-spectrum of the signal and comparing the feature vector against a pre-trained model; instructions which, when executed, divide the signal amongst a plurality of frequency bins; instructions which, when executed, determine, for each frequency bin, whether a portion of the signal within the frequency bin belongs to a narrow band distribution characteristic of the source of narrow band noise located on the console; and instructions which, when executed, filter from the signal any frequency bins containing portions of the signal belonging to the narrow band distribution. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A processor readable medium having embodied therein a set of processor executable instructions for implementing a method for reduction of noise in an electronic device having a console, one or more microphones located on the console, a source of narrow band distributed noise located on the console, a processor coupled to the microphone and
a memory coupled to the processor, the processor readable instructions including: -
instructions which, when executed, cause the device to obtain a signal from the one or more microphones containing a broad band distributed desired sound and narrow band distributed noise from the source located on the console; instructions which, when executed, divide the signal amongst a plurality of frequency bins; instructions which, when executed, determine, for each frequency bin, whether a portion of the signal within the frequency bin belongs to a narrow band distribution characteristic of the source of narrow band noise located on the console by generating a feature vector from a logarithm of a power-spectrum of the signal and comparing the feature vector against a pre-trained model; and instructions which, when executed, filter from an output signal any frequency bins containing portions of the signal belonging to the narrow band distribution.
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Specification