4 Channel Surround Sound Microphone Arrays are under
preparation and will be published on updates to this CD-ROM at a later
date and/or at www.soundscot.com
Equal segment microphones arrays for 4 channel ("Quadraphony")
and 6 channel ("Hexaphony") recording were presented at the
91st AES Convention in New York in 1991, Preprint 3157 under the title
« Microphone Arrays for Natural Multiphony » by Michael
Williams.
Contact Mike Williams at soundsscot@aol.com to register
for information about future updates.