This paper explores strategies for achieving accurate wide-area low-frequency sound reproduction in cinemas. Current standards for B-Chain calibration call for single channel low-frequency equalization aided by either single-point or spatially-averaged response measurements, an approach only applicable to a reasonably spatially invariant low-frequency response. A holistic approach to low-frequency coverage optimization is presented exploiting subwoofer arrays, their positioning and multi-point signal processing. Acoustic-field examples are presented using finite-difference time-domain (FDTD) modeling software that expose a potential for superior wide-area signal reconstruction over that achieved using the current standards and recommendations.
https://www.aes.org/e-lib/browse.cfm?elib=17610
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!