FUNDAMENTAL TONE VISUALIZATION DEVICE, FUNDAMENTAL TONE VISUALIZATION METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To assist in recognizing a pitch (fundamental tone) in acoustic waveform data (an acoustic signal) by a human.SOLUTION: By performing frequency analysis of acoustic waveform data (an acoustic signal) supplied by a plurality of sound sources for each prescribed time unit, a fundamental tone visualization device 100 acquires power spectrum in the prescribed time unit and estimates a fundamental tone for each of the sound sources on the basis of the power spectrum in the prescribed time unit acquired by the power acquisition means. Regarding the acquired power spectrum in the prescribed time unit, control is performed such that power of the estimated fundamental tone is emphasized and the power spectrum including the fundamental tone whose power is emphasized is displayed for each prescribed time unit.