TY - GEN
T1 - Analysis of acoustic MIMO systems in enclosed sound fields
AU - Morgenstern, Hai
AU - Rafaely, Boaz
PY - 2012/10/23
Y1 - 2012/10/23
N2 - Methods for room acoustic analysis based on a single loudspeaker and a single microphone have been extensively studied, both theoretically and experimentally. Although measurement techniques for acquiring and processing spatial information in a room using arrays of loudspeakers and microphones have been recently proposed, the current literature in room acoustics does not describe the use of multiple-input multiple-output (MIMO) systems in a comprehensive manner. The aim of this paper is, therefore, to present an initial theoretical framework for the spatial analysis of enclosed sound fields using an acoustic MIMO system, based on a spherical loudspeaker array and a spherical microphone array. The fundamental characteristics of the system transfer matrix are shown to be invariant to rotation of the arrays, with its rank dependant on the number of reflections in the room. The paper concludes with a simulation study validating the theoretical models.
AB - Methods for room acoustic analysis based on a single loudspeaker and a single microphone have been extensively studied, both theoretically and experimentally. Although measurement techniques for acquiring and processing spatial information in a room using arrays of loudspeakers and microphones have been recently proposed, the current literature in room acoustics does not describe the use of multiple-input multiple-output (MIMO) systems in a comprehensive manner. The aim of this paper is, therefore, to present an initial theoretical framework for the spatial analysis of enclosed sound fields using an acoustic MIMO system, based on a spherical loudspeaker array and a spherical microphone array. The fundamental characteristics of the system transfer matrix are shown to be invariant to rotation of the arrays, with its rank dependant on the number of reflections in the room. The paper concludes with a simulation study validating the theoretical models.
KW - MIMO systems
KW - Room acoustic analysis
KW - room impulse responses
KW - spherical arrays
UR - http://www.scopus.com/inward/record.url?scp=84867593944&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2012.6287854
DO - 10.1109/ICASSP.2012.6287854
M3 - Conference contribution
AN - SCOPUS:84867593944
SN - 9781467300469
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 209
EP - 212
BT - 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings
T2 - 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012
Y2 - 25 March 2012 through 30 March 2012
ER -