MASKER SOUND GENERATION DEVICE, STORAGE MEDIUM WHICH STORES MASKER SOUND SIGNAL, MASKER SOUND PLAYER DEVICE, AND PROGRAM

摘要

The purpose of the invention is to alleviate discomfort caused to persons in a space wherein a masker sound is emitted while ensuring the masking effect within said space. In a superposition process, a CPU (21) extracts sound signals of differing intervals within a human voice sound signal X₁₂-n, superpositions the extracted sound signals upon a time axis, and outputs the sound signal X₁₃-n which is superpositioned upon the time axis. Additionally, in a shift adding process, the CPU (21) carries out a shift process on a sound signal X₁₆-n, which is a process of transposing sound signals prior to a reference location of the sound signal X₁₆-n and sound signals after the reference location thereof, and outputs a sound signal X₁₇-n obtained by adding a sound signal X₁₆'-n on which the shift process has been carried out to the original sound signal X₁₆-n on which the shift process has not been carried out.