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On Implications of the ISO 3382 Backward Integration Method for Automated Decay Rate Estimation
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0003-3439-0468
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-2718-0262
2015 (English)In: Journal of The Audio Engineering Society, ISSN 0004-7554, Vol. 63, no 3, 161-173 p.Article in journal (Refereed) Published
Abstract [en]

The Schröder backward integration method for estimating the reverberation time of an enclosure, as suggested in the ISO 3382 standard, is analyzed from an estimation theoretic perspective, in a general context that is applicable to both blind and non-blind estimation. Expressions for the estimation bias and variance of the reverberation decay rate are derived and verified using Monte-Carlo simulations. Comparison is made with a straight-forward linear regression method (not using backward integration). It is shown that, even though significantly reducing the estimation variance, the use of backward integration can in many cases mitigate the estimation accuracy due to large bias. This clearly indicates that prudence is called for when using backward integration for automated decay rate estimation problems.

Place, publisher, year, edition, pages
2015. Vol. 63, no 3, 161-173 p.
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:kth:diva-162059ISI: 000351323000003Scopus ID: 2-s2.0-84925454996OAI: oai:DiVA.org:kth-162059DiVA: diva2:796772
Note

QC 20150323

Available from: 2015-03-20 Created: 2015-03-20 Last updated: 2017-12-04Bibliographically approved

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Schüldt, ChristianHändel, Peter

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