Experimental investigation of multiple-input multiple-output systems for sound-field analysis
| Autor: | Hai Morgenstern, Johannes Klein, Boaz Rafaely, Markus Noisternig |
|---|---|
| Přispěvatelé: | warusfel, olivier, Department of Electrical and Computer Engineering [Beer-Sheva], Ben-Gurion University of the Negev (BGU), Espaces acoustiques et cognitifs (EAC), Sciences et Technologies de la Musique et du Son (STMS), Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche et Coordination Acoustique/Musique (IRCAM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institute of Technical Acoustics (ITA), Rheinisch-Westfälische Technische Hochschule Aachen (RWTH), internation Commission for Acoustics, Federação/Federación Iberoamericana de Acústica, Asociacion de Acusticos Argentinos, Noisternig, Markus, Israel Science Foundation (Grant No. 146/13), French FUI-AAP14 project 'Binaural Listening' (BiLi) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph]
[SPI.ACOU] Engineering Sciences [physics]/Acoustics [physics.class-ph] microphone arrays [INFO.INFO-TS] Computer Science [cs]/Signal and Image Processing spherical harmonics spherical loudspeaker array MIMO systems MIMO [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing loudspeaker arrays [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing Room acoustics Spherical microphone array Sound field analysis [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing |
| Zdroj: | International Congress on Acoustics International Congress on Acoustics, internation Commission for Acoustics, Federação/Federación Iberoamericana de Acústica, Asociacion de Acusticos Argentinos, Sep 2016, Buenos Aires, Argentina 22nd International Congress on Acoustics (ICA) 22nd International Congress on Acoustics (ICA), Sep 2016, Buenos Aires, Argentina HAL |
| Popis: | International audience; Spherical microphone and loudspeaker arrays have been widely studied for the acquisition of spatial sound-field information. Recently, a theoretical framework, based on systems that combine both arrays, was presented for the spatial analysis of enclosed sound fields. Such systems are referred to as multiple-input multiple-output (MIMO) systems, and they provide means for an enhanced spatial analysis. However, their performance is limited by errors due to spatial sampling and system model mismatch. The effects of these errors on the system performance were studied recently in theory, without experimental validation. Therefore, the practical usefulness of MIMO systems for room-acoustics analysis has yet to be determined. This paper presents an initial investigation in this direction. MIMO system performance and limitations are first evaluated in a simulation study. The system is then studied experimentally, through the analysis of room impulse responses (RIRs). Experimental validation is achieved in several aspects. First, system properties are studied and compared to previous theoretical results. Then, MIMO processing methods are applied for a spatial analysis of early reflections in the RIR, showing that early room reflections can be identified experimentally. The results of this investigation suggest that MIMO systems can be employed in practice for various applications of room acoustics. |
| Databáze: | OpenAIRE |
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