PROBLEM TO BE SOLVED: To provide a pleasant sound generating device for air-conditioning sound, which is able to reduce unpleasant sound from air-conditioning sound of an air-conditioner, which is a constant noise source.SOLUTION: A processing section 110 estimates a frequency spectrum of vehicle traveling sound on the basis of a traveling condition acquired from an engine control device 300 and estimates a frequency spectrum of air-conditioning sound on the basis of a blowing condition acquired from an air-conditioner 400. In addition, the processing section 110 selects masking sound suitable for a frequency spectrum resulting from the addition of frequency spectra, outputs an audio signal of the masking sound to an audio device 200, and outputs the masking sound from the audio device 200. In addition, the processing section 110 outputs a change signal to the air-conditioner 400 in order to change a blowing condition in synchronization with a change in sound pressure of the masking sound. Accordingly, since the sound pressure of air-conditioning sound is also changed in synchronization with the change in the sound pressure of the masking sound, masking effect of the masking sound can be maintained with respect to the air-conditioning sound.SELECTED DRAWING: Figure 1
【課題】定常的な騒音源である空調装置の空調音に対して不快感を低減することができる空調音の快音化装置を提供する。【解決手段】処理部110は、エンジン制御装置300から取得した走行条件に基づいて車両走行音の周波数スペクトルを推定、空調装置400から取得した送風条件に基づいて空調音の周波数スペクトルを推定する。また、処理部110は、各周波数スペクトルを合算した周波数スペクトルに適したマスク音を選択し、このマスク音のオーディオ信号をオーディオ装置200に出力してオーディオ装置200からマスク音を出力する。さらに、処理部110は、マスク音の音圧の変動に同期して送風条件を変更する変更信号を空調装置400に出力する。これにより、マスク音の音圧の変動に同期して空調音の音圧も変動するので、空調音に対してマスク音のマスキング効果を維持することができる。【選択図】図1
PLEASANT SOUND GENERATING DEVICE FOR AIR-CONDITIONING SOUND
空調音の快音化装置
2018-08-09
Patent
Electronic Resource
Japanese
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |
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