Callaghan Innovation Research Papers

Back to Research Papers

TitleSpatial sound reproduction systems using higher order loudspeakers
Publication TypeConference Paper
Year of Publication2011
AuthorsPoletti, M.A., and Abhayapala T.D.
Conference NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Date Published2011
KeywordsAcoustic fields, First order, High frequency, Higher order, Loudspeakers, reproduction, Signal processing, Sound reproduction, Sound reproduction systems, Spatial sound, Speech communication, surround
AbstractSound reproduction systems aim to produce a desired sound field over a region of space. At high frequencies, the number of loudspeakers required is prohibitive. This paper shows that the use of Nth order loudspeakers, in which each loudspeaker produces polar responses up to cos (Nφ) and sin (Nφ), produces accurate reproduction over N times the area of a first order array and can largely eliminate any exterior field. This allows a significant reduction in the number of loudspeaker units, at the expense of increased complexity in each loudspeaker unit. © 2011 IEEE.

Back to top