In Pitch synchronous split-band LPC (PS-SBLPC) vocoder the authors describe an algorithm to identify pitch cycle boundaries. In "Pitch cycle detection" section, this sentence describes something that authors termed a "chirped response LPC analysis filter":

quote from paper

An LPC analysis filter is just a FIR filter with LPC-derived coefficients. What is the "chirped response" in relation to FIR filters? I understand that authors try to reduce severity of anti-resonances that can nullify whole useful signal, but how do they do it?


1 Answer 1


I guess it is somehow related to chirp signals (Chirp wiki). This kind of signal is sometimes used to determine the frequency response of a system.


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