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Convention Paper

Design and Implementation of a Sound Field Effector Using a Loudspeaker Array

Authors: Hayashi, Seigo; Tanno, Tomoaki; Kamekawa, Toru; Ashihara, Kaoru; Kiryu, Shogo

AES Convention 125 · Paper 7617 · October 2008

Abstract

We have been developing an effector which uses a 128-channel two-way loudspeaker array system for live concerts. The system was designed to ealize the change of the sound field within 10 ms. The variable delay circuits and the communication circuit between the hardware and the control computer are implemented in one FPGA. All of the delay data which have been calculated in advance are stored in the SDRAM which is mounted on the FPGA board and only the simple command is sent from the control computer. The system can control up to four sound focuses independently.

Details

Published in
AES Convention 125
AES Convention
125
Paper number
7617
Publication date
October 6, 2008
Session subject
Loudspeakers
Affiliation
Musashi Institute of Technology; Tokyo National University Arts and Music; Advanced Industrial Science and Technology (See document for exact affiliation information.)
Type
Convention Paper