Vehicle remembrance sound supply system and vehicle remembrance sound occurrence method

摘要

A-weighted sound pressure level calculation section 122, calculates the A-weighted sound pressure level around vehicle CR on the basis of the taking in sound result due to taking in sound section 150. In addition, distance calculation section 123, decides the presence of existence of the note awakening object person on the basis of the photographing result due to photographing section 160, distance to the particular note awakening object person is calculated when the note awakening object person exists. And, level control section 124, when distance to the note awakening object person is above reference distance, after calculating new revision level value on the basis of A-weighted sound pressure level, calculates level adjustment value. On the one hand, level control section 124, when distance to the note awakening object person is under particular reference distance, adopting the revision level value of the point in time when it becomes reference distance up-to-date regardless of A-weighted sound pressure level, calculates level adjustment value. In this way, output volume of false engine sound is adjusted on the basis of the level adjustment value which was calculated. As a result, it is possible to generate the false engine sound which traffic safely can be contributed.