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Convention Paper

A New and Simple Method to Define the Time Limit between the Early and Late Sound Fields

Authors: Bidondo, Alejandro; Vazquez, Javier; Vazquez, Sergio; Arouxet, Mariano; Heinze, Germán

AES Convention 141 · Paper 9631 · September 2016

Abstract

In room acoustics the crossover time is defined as the transition period between a clearly deterministic regime (early sound field), to a stochastic, memoryless one (reverberant tale or late sound field). Several studies presented different calculation methods applied to impulse responses like running gaussianity test, running kurtosis, eXtensible Fourier Transform, and Matching Pursuit. No clear or “binary moment” was found analyzing the room’s responses, so another new, simple, and robust method is proposed to determine the limiting instant between both sound fields using the autocorrelation function. Conclusions also include the analysis of several rooms and comments on the progressive change of the room’s system behavior.

Details

Published in
AES Convention 141
AES Convention
141
Paper number
9631
Publication date
September 6, 2016
Session subject
Acoustics
Affiliation
Universidad Nacional de Tres de Febrero - UNTREF, Caseros, Buenos Aires, Argentina (See document for exact affiliation information.)
Type
Convention Paper