Determining whether a measured signal matches a model signal

摘要

In a method and processor for determining whether a measured signal (eg. a speech signal S1) matches a model signal (eg. for speech recognition), values of statistical features (eg. mean, variance, or correlation) for the measured and model signal S1-10 are obtained, adjusted and compared according to the Signal to Noise Ratio (SNR) of the measured signal (eg. via its predicted trend A_TRND_V after adding various levels of noise, Fig. 3) to determine a match (ie. if the adjusted statistical feature eg. falls within an acceptable range R_TRND_V).