Direct acoustic digital to analogue conversion with digital transducer array loudspeakers

Jorge Mendoza-López; Simon Busbridge; Peter A. Fryer

Direct acoustic digital to analogue conversion with digital transducer array loudspeakers

Jorge Mendoza-López, Simon Busbridge, Peter A. Fryer

University of Brighton

Research output: Chapter in Book/Conference proceeding with ISSN or ISBN › Conference contribution with ISSN or ISBN › peer-review

Abstract

A digital transducer array (DTA) loudspeaker which produces a quantised sound field directly from binary-weighted bit streams has been developed. Theoretical investigation shows that it is possible to generate an acoustic wavefront from an assemblage of air quanta provided that the basis functions are orthogonal. Other acoustic effects e.g. filtering are presented. Moving coil transducer frequency response measurements highlight its significance to the behaviour of the array by the use of current driving. Results obtained with newly developed stiff diamond diaphragms demonstrate the importance of the transient response to the conversion process. Further results and simulations are presented giving the DTA sound field distortion as functions of the bit stream processing algorithm as well as the array geometry.

Original language	English
Title of host publication	118th AES Convention Papers
Place of Publication	Barcelona
Pages	0-0
Number of pages	1
Publication status	Published - 1 May 2005
Event	118th AES Convention Papers - CCIB, Barcelona, Spain, 2005 Duration: 1 May 2005 → …

Conference

Conference	118th AES Convention Papers
Period	1/05/05 → …

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http://www.aes.org/e-lib/browse.cfm?elib=13133Licence: Unspecified

Cite this

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title = "Direct acoustic digital to analogue conversion with digital transducer array loudspeakers",

abstract = "A digital transducer array (DTA) loudspeaker which produces a quantised sound field directly from binary-weighted bit streams has been developed. Theoretical investigation shows that it is possible to generate an acoustic wavefront from an assemblage of air quanta provided that the basis functions are orthogonal. Other acoustic effects e.g. filtering are presented. Moving coil transducer frequency response measurements highlight its significance to the behaviour of the array by the use of current driving. Results obtained with newly developed stiff diamond diaphragms demonstrate the importance of the transient response to the conversion process. Further results and simulations are presented giving the DTA sound field distortion as functions of the bit stream processing algorithm as well as the array geometry.",

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N2 - A digital transducer array (DTA) loudspeaker which produces a quantised sound field directly from binary-weighted bit streams has been developed. Theoretical investigation shows that it is possible to generate an acoustic wavefront from an assemblage of air quanta provided that the basis functions are orthogonal. Other acoustic effects e.g. filtering are presented. Moving coil transducer frequency response measurements highlight its significance to the behaviour of the array by the use of current driving. Results obtained with newly developed stiff diamond diaphragms demonstrate the importance of the transient response to the conversion process. Further results and simulations are presented giving the DTA sound field distortion as functions of the bit stream processing algorithm as well as the array geometry.

AB - A digital transducer array (DTA) loudspeaker which produces a quantised sound field directly from binary-weighted bit streams has been developed. Theoretical investigation shows that it is possible to generate an acoustic wavefront from an assemblage of air quanta provided that the basis functions are orthogonal. Other acoustic effects e.g. filtering are presented. Moving coil transducer frequency response measurements highlight its significance to the behaviour of the array by the use of current driving. Results obtained with newly developed stiff diamond diaphragms demonstrate the importance of the transient response to the conversion process. Further results and simulations are presented giving the DTA sound field distortion as functions of the bit stream processing algorithm as well as the array geometry.

M3 - Conference contribution with ISSN or ISBN

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Direct acoustic digital to analogue conversion with digital transducer array loudspeakers

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