AES E-Library

AES E-Library

Design of a Loudspeaker Array for Personal Audio in a Car Cabin

Document Thumbnail

The automobile cabin is an appropriate listening environment for a sound delivery system that allows multiple individuals to each hear a different sound program without using headphones. While an array of four standard loudspeakers can create acceptable contrast between front and rear zones, this configuration is limited to relatively low frequencies. But by mounting a loudspeaker array on the ceiling of the car cabin, a larger bandwidth for control is created. Two algorithms, acoustic contrast control and the least squares method, are considered for producing two independent listening zones: one zone for the front passengers and the other for the rear passengers. Free-field simulations were used to calculate the response of the source array and to investigate the performance of the two control algorithms. Since the performance of the least squares method is dependent on the chosen target sound pressures, a method for selecting the target sound pressures is also proposed. Finally, the proposed loudspeaker array is implemented in a real car and the measured results are found to be similar to those predicted from the simulations.

Authors:
Affiliations:
JAES Volume 65 Issue 3 pp. 226-238; March 2017
Publication Date:
Permalink: http://www.aes.org/e-lib/browse.cfm?elib=18557

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

DOI:

Start a discussion about this report!


AES - Audio Engineering Society