The SOS Audio Engineering Bookshop (under development)

It is envisaged that this page will show over 500 different titles of books or documentation, covering mostly
Audio Engineering and Technology in the English language. There will also be some titles available in French and Italian.

The first volume of my book entitled:

Microphone Arrays for
Stereo and Multichannel
Sound Recording Vol 1

was published in September 2004 by "Il Rostro" in MILAN.

This book costs 20 euros plus postage and can be ordered from Michael Williams at

This first volume (168 pages) covers
- the loudspeaker configuration and the listening room
- the training of the ear
- the operational approach to stereo and multichannel sound recording
- and an up-to-date tutorial on microphones.

It must not be forgotten however that a deeper understanding of the operational method and its justification must take into account a detailed physical and psychoacoustical analysis of the characteristics of the microphone array system. This is the subject that will be considered in detail in the second volume of this book. It will contain all the detailed analysis necessary for a complete understanding of the method used to develop the stereo and multichannel microphone array design process, together with multiple illustrations of microphone arrays suitable for most recording environments. The SOS_MMAD CD-ROM will also be an integral part of this publication. It is planned to publish this second volume in December 2010.


AES Papers on Stereo and Multichannel Array Design by Mike Williams

1987 : 82nd AES Convention in London - preprint 2466
« Unified Theory of Microphone Systems for Stereophonic Sound Recording » by Michael Williams
1990 : 88th A.E.S. Convention in Montreux - preprint 2931
« Operational Limits of the Variable M/S Stereophonic Microphone System » by Michael Williams
1991 : 91st AES Convention in New York - preprint 3155
« Early Reflections and Reverberant Field Distribution in Dual Microphone
Stereophonic Sound Recording Systems » by Michael Williams

1991 : 91st AES Convention in New York, preprint 3157  
« Microphone Arrays for Natural Multiphony » by Michael Williams
1999 : 107th AES Convention in New York : preprint 4997
« Microphone Array Analysis for Multichannel Sound Recording » by Michael Williams and Guillaume Le Dû
2000 : 108th AES Convention in Paris : preprint 5157
« Multichannel Microphone Array Design » by Michael Williams and Guillaume Le Dû
2001 : 110th AES Convention in Amsterdam : preprint 5336
« The Quick Reference Guide to Multichannel Microphone Arrays Part 1 : using Cardioid Microphones »
by Michael Williams and Guillaume Le Dû
2002 : 112th AES Convention in Munich : preprint
« Multichannel Microphone Array Design : Segment Coverage Analysis above and below the Horizontal Reference Plane »
by Michael Williams
2003 : 24th International AES Conference in Banff, Canada
« Multichannel Sound Recording Practice using Microphones Arrays »
and a presentation in a poster session of a new concept for a « Multichannel Microphone Support System »
2004 : 116th AES Convention in Berlin : Preprint 6059
«The Quick Reference Guide to Multichannel Microphone Arrays - Part II : using Supercardioid and Hypocardioid Microphones » by Michael Williams and Guillaume Le Dû
2004 : 117th AES Convention in San Francisco : Preprint 6230
«Multichannel Sound Recording using 3, 4 and 5 channel arrays for Front Sound Stage Coverage » by Michael Williams
2005 : 118th AES Convention in Barcelona: Preprint 6373
«The Whys and Wherefores of Acoustic Cross-talk in Multichannel Microphone Array Design » by Michael Williams

These papers and other AES documents can be ordered from or from