METHOD FOR EXTRACTING THE HARMONIC OF VESSEL NOISE SOURCE

摘要

PURPOSE: A method for automatically extracting a harmonic of a noise source of a ship is provided to extract a harmonic reference frequency and harmonic degree by extracting harmonic feature information from complex underwater acoustic tonal components and performing harmonic similarity discrimination. CONSTITUTION: A method for automatically extracting a harmonic of a noise source of a ship is as follows. A reference degree for an harmonic extraction is set(S110). Extracting sections with respect to each harmonic component are simultaneously set by using the reference degree for the harmonic extraction(S200). Harmonic feature information is extracted from each set extracting section(S300). The harmonic similarity is discriminated by using the harmonic feature information(S400). A harmonic reference frequency and the harmonic degree are finally calculated by using a candidate classified in the step discriminating the harmonic similarity(S500).