Energy decay curves in reverberation chambers and the influence of scattering objects on the absorption coefficient of a sample

Jamilla Balint; Florian Muralter; Melanie Nolan; Cheol-Ho Jeong

Energy decay curves in reverberation chambers and the influence of scattering objects on the absorption coefficient of a sample

Jamilla Balint, Florian Muralter, Melanie Nolan, Cheol-Ho Jeong

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

This work deals with the multi-exponential nature of energy decay curves in reverberation chambers. Impulse response measurements have been carried out with different room and sample configurations to investigate the effect of scattering elements and the position of the absorber on the slopes and bending points of the energy decay curve. In this context Annex A of ISO 354 is discussed also. The reverberation time is calculated by fitting a sum of exponentials to the data instead of using conventional parameters obtained with linear regression. The absorption coefficient is calculated with the reverberation time obtained from the initial part of the energy decay. The results are compared with theoretically obtained values, also considering the size effect.

Original language	English
Title of host publication	Euronoise 2018 - Conference Proceeding
Number of pages	6
Publisher	European Acoustics Association
Publication date	2018
Publication status	Published - 2018
Event	Euronoise 2018 - Convention Center Creta Maris, Hersonissos, Crete, Greece Duration: 27 May 2018 → 31 May 2018

Conference

Conference	Euronoise 2018
Location	Convention Center Creta Maris
Country	Greece
City	Hersonissos, Crete
Period	27/05/2018 → 31/05/2018

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title = "Energy decay curves in reverberation chambers and the influence of scattering objects on the absorption coefficient of a sample",

abstract = "This work deals with the multi-exponential nature of energy decay curves in reverberation chambers. Impulse response measurements have been carried out with different room and sample configurations to investigate the effect of scattering elements and the position of the absorber on the slopes and bending points of the energy decay curve. In this context Annex A of ISO 354 is discussed also. The reverberation time is calculated by fitting a sum of exponentials to the data instead of using conventional parameters obtained with linear regression. The absorption coefficient is calculated with the reverberation time obtained from the initial part of the energy decay. The results are compared with theoretically obtained values, also considering the size effect.",

author = "Jamilla Balint and Florian Muralter and Melanie Nolan and Cheol-Ho Jeong",

year = "2018",

language = "English",

booktitle = "Euronoise 2018 - Conference Proceeding",

publisher = "European Acoustics Association",

note = "Euronoise 2018 ; Conference date: 27-05-2018 Through 31-05-2018",

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Energy decay curves in reverberation chambers and the influence of scattering objects on the absorption coefficient of a sample. / Balint, Jamilla; Muralter, Florian; Nolan, Melanie ; Jeong, Cheol-Ho.

Euronoise 2018 - Conference Proceeding. European Acoustics Association, 2018.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Energy decay curves in reverberation chambers and the influence of scattering objects on the absorption coefficient of a sample

AU - Balint, Jamilla

AU - Muralter, Florian

AU - Nolan, Melanie

AU - Jeong, Cheol-Ho

PY - 2018

Y1 - 2018

N2 - This work deals with the multi-exponential nature of energy decay curves in reverberation chambers. Impulse response measurements have been carried out with different room and sample configurations to investigate the effect of scattering elements and the position of the absorber on the slopes and bending points of the energy decay curve. In this context Annex A of ISO 354 is discussed also. The reverberation time is calculated by fitting a sum of exponentials to the data instead of using conventional parameters obtained with linear regression. The absorption coefficient is calculated with the reverberation time obtained from the initial part of the energy decay. The results are compared with theoretically obtained values, also considering the size effect.

AB - This work deals with the multi-exponential nature of energy decay curves in reverberation chambers. Impulse response measurements have been carried out with different room and sample configurations to investigate the effect of scattering elements and the position of the absorber on the slopes and bending points of the energy decay curve. In this context Annex A of ISO 354 is discussed also. The reverberation time is calculated by fitting a sum of exponentials to the data instead of using conventional parameters obtained with linear regression. The absorption coefficient is calculated with the reverberation time obtained from the initial part of the energy decay. The results are compared with theoretically obtained values, also considering the size effect.

M3 - Article in proceedings

BT - Euronoise 2018 - Conference Proceeding

PB - European Acoustics Association

T2 - Euronoise 2018

Y2 - 27 May 2018 through 31 May 2018

ER -