A method of controlling an electronic apparatus may include: acquiring a first audio signal may include an audio signal corresponding to a first audio source and an audio signal corresponding to a second audio source; acquiring a second audio signal by separating the audio signal corresponding to the first audio source from the first audio signal in a bandwidth below a preset frequency; acquiring a third audio signal by separating an audio signal in a bandwidth higher than or equal to the preset frequency from the first audio signal; acquiring a fourth audio signal by combining the second audio signal and the third audio signal; and for each of a plurality of frames constituting the fourth audio signal, acquiring a fifth audio signal by removing the component higher than or equal to the preset frequency.