System for suppressing passing tire hiss

A system for detecting passing tire hiss noise from a signal, comprising:

• 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 a 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;
• where the passing tire hiss noise detector is configured to identify whether the input signal includes the noise associated with passing tire hiss based on a correlation between a smoothly varying function and a portion of the input signal.

A system for suppressing passing tire hiss noise from a signal, comprising:

• 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 a 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, where the passing tire hiss noise detector is configured to identify whether the input signal includes passing tire hiss based on a correlation between the smoothly varying function and the portion of the 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.

A method of removing passing tire hiss from a signal comprising:

• converting a time varying signal to a complex spectrum;
• estimating a background noise;
• detecting a passing tire hiss noise based on a correlation between a smoothly varying function and a portion of an input signal;
• and
• dampening the passing tire hiss noise from the input signal.

A method of removing passing tire hiss from a signal comprising:

• 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.

A computer-readable non-transitory medium storing software that, when executed by a computer, causes the computer to control a detection of a noise associated with a passing tire hiss, the software comprising:

• a detector logic that processes electrical signals that represent sound waves;
• 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;
• where the signal analysis logic identifies that the portion of the sound waves contains passing tire hiss based on a correlation between a smoothly varying function and the portion of the sound waves.

A system for suppressing passing tire hiss noise from a signal, comprising:

• 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 attenuating at least a portion of the passing tire hiss from the input signal;
• where the noise detecting means is configured to identify whether the input signal includes the passing tire hiss by a processor fitting a smoothly varying function to a portion of the input signal.