Enhanced wide-area low-frequency sound reproduction in cinemas: Effective and practical alternatives to current sub-optimal calibration strategies
Journal article
Hill, Adam J., Hawksford, Malcolm O. J. and Newell, Philip 2015. Enhanced wide-area low-frequency sound reproduction in cinemas: Effective and practical alternatives to current sub-optimal calibration strategies.
| Authors | Hill, Adam J., Hawksford, Malcolm O. J. and Newell, Philip |
|---|---|
| Abstract | 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. |
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 | |
| Keywords | Audio; Audio engineering; Acoustics; Digital signal processing; Cinema sound |
| Year | 2015 |
| Publisher | Audio Engineering Society |
| Web address (URL) | http://hdl.handle.net/10545/583104 |
| hdl:10545/583104 | |
| Publication dates | 06 Mar 2015 |
| Publication process dates | |
| Deposited | 02 Dec 2015, 09:41 |
| Contributors | University of Derby, University of Essex and Acoustic Consultant |
| File | File Access Level Open |
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