Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : June 29, 2016 - July 01, 2016
In order to satisfy the requirement of quiet environment in a car of light weight, the active noise control techniques have been utilized for reducing the engine booming noise and the road noise. The sound field inside a car is considered to be change according to the conditions that doors and windows are open or close and how many passengers are sitting, especially in rather high frequency range. Therefore some multichannel adaptive system is needed to reduce the noise sufficiently. However that system is too complicated and costly to use for real cars, and some fixed system is recommended. In this case, it is an important issue how the sound field is affected by the above conditions. The purpose of this paper is to make sure the influence of number of passengers to ANC performance inside a car. As the results, it was found that the sound field inside a car was not severely affected by the passenger’s number below around 200Hz in a small car.
