The Influence of Overlapping Band Filters on Octave Band Decay Curves

Gerd Marbjerg, Jonas Brunskog*, Cheol-Ho Jeong, Valentina Zapata Rodriguez

*Corresponding author for this work

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Abstract

This study showed that the overlap of practically-used bandpass filters can influence the octave band decay curves, especially if the decays are calculated from a filtered impulse response that has been created from octave band energy responses. Energy from a frequency band with a long reverberation time can leak into a neighbouring band with a shorter reverberation time. This also means that neither octave band decays from a measured response are independent, nor are measured octave band reverberation times.
Original languageEnglish
JournalAcustica United with Acta Acustica
Volume104
Pages (from-to)943 – 946
ISSN1610-1928
DOIs
Publication statusPublished - 2018

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