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Performance Analysis of Digital Loudspeaker Arrays

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An analysis of digital loudspeaker arrays shows that the ways in which bits are mapped to the drivers influence the quality of the audio result. Specifically, a “bit-summed” rather than the traditional “bit-mapped” strategy greatly reduces the number of times drivers make binary transitions per period of the input frequency. Detailed simulations compare the results for a 32-loudspeaker array with a similar configuration with analog excitation of the drivers. Ideally, drivers in digital arrays should be very small and span a small area, but that sets limits on the low-frequency response.

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JAES Volume 56 Issue 9 pp. 667-683; September 2008
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Permalink: http://www.aes.org/e-lib/browse.cfm?elib=14631

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AES - Audio Engineering Society