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 attenuate at least a portion of the passing tire hiss from the input signal; where the noise detector is configured to identify whether the input signal includes the passing tire hiss by fitting a smoothly varying function to a portion of the input signal.