Patent ID: 7725315
Filing Date: 2010-05-25
Classification: G10L

Abstract:
1. A transient road noise detector for detecting the presence of transient road noise in a signal, the transient road noise detector comprising: an analog to digital converter that converts a received signal into a digital signal; a windowing function generator that divides the digital signal into a plurality of individual analysis windows; a transform module that transforms the individual analysis windows from time domain signals to frequency domain short term spectra; and a modeler that generates and stores model attributes of transient road noise, and that compares attributes of the short term spectra of the transformed analysis windows to the model attributes to determine whether a transient noise present in the received signal is a transient road noise, where the model attributes include the presence of two sound events separated by a period of time based on the speed at which a vehicle is traveling and a distance between front and rear wheels of the vehicle, and where the period of time between the two sound events is determined by an adaptive model.