An audio processing method comprising: generating a plurality of frequency spectra by transforming a plurality of audio signals inputted to a plurality of input devices respectively; for each frequency spectrum of the plurality of frequency spectra: determining target frequency components from among frequency components in the frequency spectrum; comparing an amplitude of each of the target frequency components with an amplitude of target frequency components of the same frequency in one or more other frequency spectra; specifying one or more target frequency components whose amplitude is larger than the amplitude of the target frequency component of the same frequency in the one or more other frequency spectra, the one or more specified target frequency components being hereinafter referred to as "occupied frequencies"; calculating a proportion of the total number of the occupied frequencies to the total number of the target frequency components; and controlling an output corresponding to the audio signal corresponding to the frequency spectrum, based on a suppression amount calculated based on the proportion such that the suppression amount decreases as the proportion increases and the suppression amount increases as the proportion decreases. generating a plurality of frequency spectra by transforming a plurality of audio signals inputted to a plurality of input devices respectively; for each frequency spectrum of the plurality of frequency spectra: determining target frequency components from among frequency components in the frequency spectrum; comparing an amplitude of each of the target frequency components with an amplitude of target frequency components of the same frequency in one or more other frequency spectra; specifying one or more target frequency components whose amplitude is larger than the amplitude of the target frequency component of the same frequency in the one or more other frequency spectra, the one or more specified target frequency components being hereinafter referred to as "occupied frequencies"; calculating a proportion of the total number of the occupied frequencies to the total number of the target frequency components; and controlling an output corresponding to the audio signal corresponding to the frequency spectrum, based on a suppression amount calculated based on the proportion such that the suppression amount decreases as the proportion increases and the suppression amount increases as the proportion decreases. determining target frequency components from among frequency components in the frequency spectrum; comparing an amplitude of each of the target frequency components with an amplitude of target frequency components of the same frequency in one or more other frequency spectra; specifying one or more target frequency components whose amplitude is larger than the amplitude of the target frequency component of the same frequency in the one or more other frequency spectra, the one or more specified target frequency components being hereinafter referred to as "occupied frequencies"; calculating a proportion of the total number of the occupied frequencies to the total number of the target frequency components; and controlling an output corresponding to the audio signal corresponding to the frequency spectrum, based on a suppression amount calculated based on the proportion such that the suppression amount decreases as the proportion increases and the suppression amount increases as the proportion decreases.