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Convention Paper

A Simple Acoustic Room Model for Virtual Production

Authors: Walker, Bob

AES Convention 106 · Paper 4937 · May 1999

Abstract

The use of television virtual production is becoming commonplace. This paper describes the principles of a simple, experimental audio system, developed to accompany a video virtual production system. The acoustic model included the direct sound, six first-order room boundary reflections, reverberation, source directivity, air and surface absorption and obstruction or reflection of the direct sound by one internal, flat object within the room, with diffraction effects around the obstacle. The paper describes the topological arrangement of dsp modules, the models used to implement delay, reverberation and filtering and discusses some of the frequency-domain approximations used.

Details

Published in
AES Convention 106
AES Convention
106
Paper number
4937
Publication date
May 6, 1999
Session subject
Room Acoustics
Affiliation
Research and Development Department, BBC, Taclworth, England (See document for exact affiliation information.)
Type
Convention Paper