An Exploratory Analysis of Sound Field Characteristics using the Impulse Response in a Car Cabin

Environments

Yoshiharu Soeta¹  Yoshisada Sakamoto² 

[1] Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda 563-8577, Japan;Suzuki Motor Corporation, Hamamatsu 432-8611, Japan;

关键词: sound field;    car cabin;    impulse response;    air conditioner;   

DOI  :  10.3390/environments5040044

来源: DOAJ

【 摘 要 】

Sound environments in cars are becoming quieter and receiving attention because of the prevalence of low-noise engines such as hybrid and electric engines and the manifestation of automated driving. Although the car cabin has potential as a listening space, its acoustic quality has not been examined in detail. The present study investigated sound field characteristics in the car cabin using acoustic parameters obtained by impulse response analysis. In particular, effects of the passenger position, open windows and the use of an air conditioner on acoustic parameters were investigated. The passenger position affected the sound strength at low frequencies. Rear seats, except for the rear central seat, had lower interaural correlation than the front seats, suggesting that rear seats have more diffused sound fields. The opening of windows and use of air conditioners attenuated the ratio of early- and late-arriving energy at high frequencies, suggesting a loss of clarity for music.

【 授权许可】

Unknown