Spectrum feature parameter extracting system based on frequency weight estimation function

Abstract From the Canadian patent

A system solves a problem of a low accuracy in a low-energy frequency area when spectrum feature parameters are extracted with the use of linear analysis of speech or audio signals and a problem of a low accuracy in formant extracting when a spectrum approximation is slanted and, increases the extracting accuracy of spectrum feature parameters with respect to any given frequency band. This system includes an input unit for receiving an input signal, a weight calculating unit for receiving a weight function impulse response, a storing unit for storing the input signal for a specified length of time, a filtering unit for filtering the input signal using, the impulse response, an …