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AR/ARMA Analysis and Modeling of Modes in Resonant and Reverberant Systems

Discrete-time analysis and modeling of reverberant and resonating systems has many applications in audio and acoustics. In a recent paper (AES110, Preprint 5290) we formulated techniques for the estimation of modal decay parameters from noisy response measurements, targeting to systems such as room reverberation and modal decay as well as musical instrument modeling. In this paper we extend the methodology to AR and ARMA modeling of measured responses by all-pole and pole-zero filters. In addition to an overview of standard techniques we propose a spectral zooming technique that is useful for resolving very closely positioned modes and high-density modal clusters. Sensitivity to background noise is also studied. Application cases are taken from analysis and modeling of room responses, loudspeaker-room equalization, and estimation of parameters for musical instrument modeling.

Authors: Karjalainen, Matti; Esquef, Paulo Antonio Andrade; Antsalo, Poju; Makivirta, Aki; Valimaki, Vesa
Affiliations: Helsinki University of Technology, Lab. of Acoustics and Audio Signal Processing,HUT, Finland ; Genelec Oy, Olvitie 5, Iisalmi, Finland ; Tampere University of Technology, Pori School of Technology and Economics, Pori, Finland(See document for exact affiliation information.)
AES Convention:112 (April 2002) Paper Number:5590 Import into BibTeX
Subject:Instrumentation and Measurement

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