Acoustic signal output device

Abstract

Provided is an open-ear acoustic signal output device worn on both ears, including a first signal output unit that outputs a first output signal for outputting a first monophonic acoustic signal from a first acoustic signal output unit worn on one ear, and a second signal output unit that outputs a second output signal for outputting a second monophonic acoustic signal from a second acoustic signal output unit worn on another ear. Here, in a case where the first monophonic acoustic signal is output from the first acoustic signal output unit and the second monophonic acoustic signal is output from the second acoustic signal output unit, an attenuation rate of the first monophonic acoustic signal at a second point with reference to a predetermined first point, where the first monophonic acoustic signal arrives at the first point and the second point is farther from the first acoustic signal output unit than the first point, is equal to or less than a predetermined value smaller than an attenuation rate due to air propagation of an acoustic signal at the second point with reference to the first point. Alternatively, an attenuation amount of the first monophonic acoustic signal at the second point with reference to the first point is equal to or more than a predetermined value larger than an attenuation amount due to air propagation of an acoustic signal at the second point with reference to the first point.

Dependencies are inferred from the claim text.