MUSIC DETECTION WITH LOW-COMPLEXITY PITCH CORRELATION ALGORITHM

摘要

A method for detecting music in a speech signal having a plurality of frames (120). The method comprises obtaining one or more first pitch correlation candidates from a first frame of the plurality of frames (771); obtaining one or more second pitch correlation candidates from a second from of the plurality of frames (771); selecting a pitch correlation (RP) from the one or more first pitch correlation candidates and one or more second pitch correlation candidates (773); and distinguishing music from background noise based on analyzing the pitch correlation (Rp) (775). The method may comprise filtering the speech signal using a one-order low-pass filter prior to the obtaining the one or more first pitch correlation candidates (920), and down sampling the speech signal by four prior to obtaining the one or more first pitch correlation candidates (940).