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Convention Paper Open Access

Digital Filter for Modeling Air Absorption in Real Time

Authors: Petruzzellis, Carlo; Zanghieri, Umberto

AES Convention 134 · Paper 8888 · May 2013

Abstract

Sound atmospheric attenuation is a relevant aspect of realistic space modeling in 3-D audio simulation systems. A digital filter has been developed on commercial DSP processors to match air absorption curves. This paper focuses on the algorithm implementation of a digital filter with continuous roll-off control, to simulate high frequency damping of audio signals in various atmospheric conditions, along with rules to allow a precise approximation of the behavior described by analytical formulas.

Details

Published in
AES Convention 134
AES Convention
134
Paper number
8888
Publication date
May 6, 2013
Session subject
Room Acoustics
Affiliation
ZP Engineering S.r.L., Rome, Italy (See document for exact affiliation information.)
Type
Convention Paper