System for suppressing passing tire hiss
First Claim
Patent Images
1. A system for suppressing passing tire hiss noise from a signal, comprising:
- a noise detector that detects and models a passing tire hiss from an input signal; and
a noise attenuator electrically connected to the noise detector to substantially remove the passing tire hiss from the input signal.
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Abstract
A voice enhancement logic improves the perceptual quality of a processed voice. The voice enhancement system includes a passing tire hiss noise detector and a passing tire hiss noise attenuator. The passing tire hiss noise detector detects a passing tire hiss noise by modeling the passing tire hiss. The passing tire hiss noise attenuator dampens the passing tire hiss noise to improve the intelligibility of a speech signal.
132 Citations
53 Claims
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1. A system for suppressing passing tire hiss noise from a signal, comprising:
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a noise detector that detects and models a passing tire hiss from an input signal; and
a noise attenuator electrically connected to the noise detector to substantially remove the passing tire hiss from the input signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24)
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17. A system for detecting passing tire hiss noise from a signal, comprising:
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a time frequency transform logic that converts a time varying input signal into the frequency domain;
a background noise estimator coupled to the time frequency transform logic, the background noise estimator configured to measure the continuous noise that occurs near a receiver; and
a passing tire hiss noise detector coupled to the background noise estimator, the passing tire hiss noise detector configured to automatically identify and model a noise associated with passing tire hiss.
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25. A system for suppressing passing tire hiss noise from a signal, comprising:
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a time frequency transform logic that converts a time varying input signal into the frequency domain;
a background noise estimator coupled to the time frequency transform logic, the background noise estimator configured to measure the continuous noise that occurs near a receiver;
a passing tire hiss noise detector coupled to the background noise estimator, the passing tire hiss noise detector configured to fit a smoothly varying function to a portion of an input signal; and
a passing tire hiss noise attenuator coupled to the passing tire hiss noise detector, the passing tire hiss noise attenuator being configured to remove a noise associated with passing tire hiss that is sensed by the receiver. - View Dependent Claims (27, 28)
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26. A method of removing a passing tire hiss noise from an input signal comprising:
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converting a time varying signal to a complex spectrum;
estimating a background noise;
detecting a passing tire hiss noise when a high correlation exists between a smoothly varying function and a portion of an input signal; and
dampening the passing tire hiss noise from the input signal.
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29. A method of removing a passing tire hiss noise from an input signal comprising:
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converting a time varying signal to a complex spectrum;
estimating a background noise;
detecting a passing tire hiss noise when a high correlation exists between a smoothly varying function and a portion of an input signal; and
removing the passing tire hiss noise from the input signal. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 40, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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30. A signal-bearing medium having software that controls a detection of a noise associated with a passing tire hiss comprising:
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a detector that converts sound waves into electrical signals;
a spectral conversion logic that converts the electrical signals from a first domain to a second domain; and
a signal analysis logic that models a portion of the sound waves that are associated with the passing tire hiss.
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39. A system for suppressing passing tire hiss noise from a signal, comprising:
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noise detecting means for detecting and modeling a passing tire hiss from an input signal; and
noise attenuating means electrically connected to the noise detecting means for substantially removing the passing tire hiss from the input signal. - View Dependent Claims (41)
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Specification