Line-source Loudspeakers

This is a collection of papers and articles on the subject of design and analysis of loudspeaker arrays. I did some work on these a few years ago and even built two of my designs whilst at KEF Electronics Ltd. I've posted these articles because I expect that they are not available elsewhere. (I was alarmed to see some of them are even older than me!). Many of the papers are scans of old typescripts and the quality is not great. There are some annotations too, not all by me. I am sorry that I am not able to give full details of each article but I have provided all the details that I have available.

I am very grateful to Dr Richard Small and Laurie Fincham, formerly of KEF Electronics Ltd, for their guidance and infectious enthusiasm for audio and acoustics.

Please feel free to email me if you have other articles on this topic or other relevant information.

J. R. Ashley, "Intelligibility of Sound Reinforcement in Large Public Spaces."

J. R. Ashley, "Audio Conversations - Church P.A. Systems, Part 1", Feb 1982.

G. E. Horn, P. G. Tandy and Percy Wilson, "Sound Reinforcement for Banquet Halls, Ballrooms and Conference Rooms", 35th Convention of the Audio Engineering Soc., New York, October 1968.

W. H. Iding, "Unidirectionally Radiating Loudspeakers," Audio Engineering Soc. Inc.

D. L. Klepper and D. W. Steele, "Constant Directional Characteristics from a Line Source Array", Journal of the Audio Engineering Soc., Vol. 11, No. 3, July 1963.

J. F. Novak, "A Column Loudspeaker with Controlled Coverage Angle," Midwest Communications and Sound Seminar of the Electric Association of Chicago, May 1962.

"Bessel Panels - High-Power Speaker Systems with Radial Sound Distribution," Philips Technical Publication 091, March 1983.

T. Salava, "Arrays of Discrete Sound Sources and/or Continuous Line-Radiators," Audio Engineering Soc. Inc.

W. R. Stevens and P. W. Barnett, "Loudspeaker Design for Speech Intelligibility in Reverberant Spaces," Meeting of the Institute of Acoustics, University of Edinburgh, September 1982.

Unknown author, "Theory and Applications of Electrically Tapered Electro-Acoustic Arrays," IREE International Electronics Convention, 1975.