PLEASANT SOUND MAKING DEVICE FOR FACILITY APPARATUS SOUND, AND PLEASANT SOUND MAKING METHOD FOR FACILITY APPARATUS SOUND

摘要

A pleasant sound making device processes temporal variation characteristics in nature such that a frequency component and a peak frequency component in a frequency band which coincide with or are approximate to a housing of an indoor unit provided with a driving part (a fan, a motor, etc.) do not coincide with or are not approximate to the housing, on the basis of subjective view and physiological response evaluations of humans, and operates the driving part with a signal based on the processed waveform.

主权项

1. A pleasant sound making device for a facility apparatus sound which makes a sound generated by a facility apparatus which operates a driving part, into a pleasant sound, the pleasant sound making device comprising:
a signal processing unit configured to select, in advance based on a subjective view and physiological response of humans with respect to a sound existing in nature, a signal obtained upon suppression of a portion of a frequency component of a temporal variation characteristic of a frequency of the sound existing in nature, which coincides with or is approximate to an eigenvalue of a housing of the facility apparatus provided with the driving part, and generate an operation signal for the driving part based on the selected signal.