The generation of independent or personal listening zones is of significant interest in the car cabin environment. As such there are a number of methods of optimizing loudspeaker arrays to achieve personal audio reproduction. The optimization methods currently in the literature generally have a trade-off between the level of acoustic contrast between the bright and dark zones and the variance of the sound pressure within the bright zone. A high level of variance in the bright zone may produce a subjectively poor performance and although this may be overcome using the least squares or acoustic contrast with planarity control methods, they are generally non-trivial to setup to achieve both a high level of acoustic contrast and a low level of variance. This paper proposes a new optimization method which maximizes the acoustic contrast with a constraint that limits the sound differences within the bright zone and is relatively straightforward to setup. The performance of the proposed optimization method is compared to acoustic contrast maximization, least squares and acoustic contrast maximization with planarity control methods through a series of simulations of a car cabin personal audio system.
https://www.aes.org/e-lib/browse.cfm?elib=17354
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
Start a discussion about this paper!
