A car interior simulation model based on the Finite Difference Time Domain method (FDTD) has been constructed in Matlab. The FDTD method is a finite wave propagation method that is very robust at low frequencies where other room simulation models as Ray Tracing are not sufficiently accurate. A measurement setup consisting of an array of 16 microphones and two low frequency loudspeakers in the car interior has been utilized to evaluate and verify the model. A number of 16 x 25 microphone positions producing 400 impulse responses inside the car interior have been measured for each loudspeaker. The FDTD method provides a tool for analysis of sound propagation, room modes and time response that can be applied for research purposes in automotive environment acoustics. The results indicate good agreement between the FDTD automotive simulation and measurements in a test car below 100 Hz.

Authors: Celestinos, Adrian; Olsen, Martin; Møller, Martin Bo; Lydolf, Morten
Affiliation: Bang & Olufsen a/s, Struer, Denmark
AES Conference: 48th International Conference: Automotive Audio (September 2012)
Paper Number: 6-4
Publication Date: September 21, 2012
Subject: Audio Reproduction in Cars - Acoustic Adaption to the Car Interior

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.