Importance

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Abstract

Disclosed herein are systems and methods for identifying the source of a signal via channel equalization using characteristics of the signal. A system receives a signal, then measures a frequency response of the signal by performing a spectral analysis over the entire signal. The system computes the average amplitude over a subset of time samples from the spectral analysis for each represented frequency and compares the set of averaged amplitudes to a stored set of averaged amplitudes to produce equalization coefficients. Applying the equalization coefficients to the frequency response yields an equalized frequency response, which is compared to a stored frequency response using a classifier to determine a match. Alternately, the system applies the equalization coefficients to the stored frequency response yielding an equalized stored frequency response. The method can recognize speakers, vehicles, electromagnetic signals, sonar signals, optical signals, videos, etc.

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First Claim