Audio signal processing device, audio signal processing method, and recording medium

Abstract

An audio signal processing device includes: an obtainer that obtains an audio signal; a first signal processor that generates, based on the audio signal, a first high-frequency signal including a high-frequency component in a frequency band higher than a first frequency higher than a human hearing range; and an adder that adds the first high-frequency signal to the audio signal to generate an expanded audio signal having an expanded high-frequency range. The first signal processor generates the first high-frequency signal by performing: (i) first signal processing including first clipping processing of clipping the audio signal at a first amplitude; and (ii) first high-pass filter processing of passing an audio signal obtained by the first clipping processing through the frequency band higher than the first frequency.

Dependencies are inferred from the claim text.