An automatic model-building algorithm for sparse approximation of room impulse responses with orthonormal basis functions

G. Vairetti, T. van Waterschoot, M. Moonen, M. Catrysse, Søren Holdt Jensen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

3 Citations (Scopus)

Abstract

Orthonormal Basis Function (OBF) models are used to define stable fixed-poles infinite impulse response filter structures that allow to incorporate knowledge about the resonant characteristics of a stable, causal and linear system. In the approximation of a room impulse response, OBF models can include knowledge about the room resonances as a set of poles, which appear nonlinearly in the structure. A novel algorithm is pro-posed, that avoids this nonlinear problem by iteratively estimating the poles and building the model. Some of the properties of OBF models, such as orthogonality and linearity-in-the-parameters, are exploited and the final model has the favorable property of being scalable. The OBF model provides a longer response than the all-zero model and is particularly suited in approximating the early response and the predominant resonances for relatively small model orders.
Original languageEnglish
Title of host publicationAcoustic Signal Enhancement (IWAENC), 2014 14th International Workshop on
Number of pages5
PublisherIEEE
Publication date2014
Pages248-252
ISBN (Print)978-1-4799-6808-4
DOIs
Publication statusPublished - 2014
EventIWAENC 2014: The International Workshop on Acoustic Signal Enhancement - Antibes, France
Duration: 9 Sep 201411 Sep 2014

Conference

ConferenceIWAENC 2014
CountryFrance
CityAntibes
Period09/09/201411/09/2014
SeriesProceedings of the International Workshop in Acoustic Echo and Noise Control (IWAENC)

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Vairetti, G., van Waterschoot, T., Moonen, M., Catrysse, M., & Jensen, S. H. (2014). An automatic model-building algorithm for sparse approximation of room impulse responses with orthonormal basis functions. In Acoustic Signal Enhancement (IWAENC), 2014 14th International Workshop on (pp. 248-252). IEEE. Proceedings of the International Workshop in Acoustic Echo and Noise Control (IWAENC) https://doi.org/10.1109/IWAENC.2014.6954296