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Convention Paper

What’s Old Is New Again: Using a Physical Scale Model Echo Chamber as a Real-Time Reverberator

Authors: Delcourt, Kevin; Zagala, Franck; Blum, Alan; Katz, Brian F. G.

AES Convention 147 · Paper 10236 · October 2019

Abstract

This paper presents a method using physical scale models as echo chambers. The proposed framework creates a partitioned convolution engine where the convolution processing is carried out physically on an up-scaled live audio stream in the model. The resulting reverberated sound is captured and down-scaled, providing the result to the user in real-time. The scale factor can be dynamically changed to explore different room sizes and the reduced dimensions of the scale model make it a tangible reverberation tool. Scale factors up to 1:5 have been tested for full bandwidth, with higher factor possible with improved hardware or in exchange for lowering the upper frequency range, primarily due to driver performance.

Details

Published in
AES Convention 147
AES Convention
147
Paper number
10236
Publication date
October 6, 2019
Session subject
Room Acoustics
Affiliation
École Nationale Supérieure Louis Lumière, Saint-Denis, France; Sorbonne Université, Paris, France (See document for exact affiliation information.)
Type
Convention Paper