To provide a vehicle sound inspection system and a vehicle sound inspection method that can reduce the inspection man-hours while maintaining the accuracy of determining the actuation of a sound generation device mounted on a vehicle.SOLUTION: A vehicle sound inspection system 1 comprises: a sound generation device 10 that is mounted on a vehicle 2; and an inspection device 20 that is arranged separate from the sound generation device 10. The sound generation device 10 has: a sound control unit 14 that generates, from an original sound signal representing a predetermined original sound, a diffusion sound signal obtained by diffusing the original sound by using a diffusion code; and a speaker 12 that generates a diffusion sound based on the diffusion sound signal. The inspection device 20 has: a microphone 22 that collects the diffusion sound generated by the sound generation device 10; a back diffusion unit 32 that generates a back diffusion sound signal obtained by back-diffusing a collection sound signal representing a collection sound collected by the microphone 22 by using the diffusion code; a correlation determination unit 33 that determines a correlation between the original sound and a back diffusion sound based on the back diffusion sound signal; and an output unit 34 that outputs a result of determination performed by the correlation determination unit 33.SELECTED DRAWING: Figure 2

    【課題】車両に搭載された音生成装置の作動判定精度を維持しつつ、検査工数を低減することができる車両の音検査システム及びその音検査方法を提供する。【解決手段】車両2に搭載された音生成装置10と、この音生成装置10から離隔配置された検査装置20とを備えた車両の音検査システム1であって、音生成装置10は、所定の原音を表す原音信号から拡散符号を用いて拡散した拡散音信号を生成する音制御部14と、拡散音信号に基づく拡散音を発生するスピーカ12とを有し、検査装置20は、音生成装置10が発生した拡散音を収集するマイク22と、マイク22が収集した収集音を表す収集音信号を拡散符号を用いて逆拡散した逆拡散音信号を生成する逆拡散部32と、原音と逆拡散音信号に基づく逆拡散音との相関関係を判定する相関判定部33と、相関判定部33の判定結果を出力する出力部34とを有する。【選択図】 図2


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    Title :

    VEHICLE SOUND INSPECTION SYSTEM AND VEHICLE SOUND INSPECTION METHOD


    Additional title:

    車両の音検査システム及びその音検査方法


    Contributors:

    Publication date :

    2022-12-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein



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