Room impulse responses are inherently multidimensional, including components in three coordinate directions, each one further being described as a time-frequency representation. Such 5-dimensional data is difficult to visualize and interpret. We propose methods that apply 3-D microphone arrays, directional analysis of measured room responses, and visualization of data, yielding useful information about the time-frequency-direction properties of the responses. The applicability of the methods is demonstrated with three different cases of real measurement.

Authors: Karjalainen, Matti; Merimaa, Juha; Peltonen, Timo; Lokki, Tapio
Affiliations: Helsinki University of Technology, Laboratory of Acoustics and Audio Signal Processing, HUT, Finland ; Helsinki University of Technology, Telecommunications Software and Multimedia Laboratory, HUT, Finland, Akukon Oy Consulting Engineers,Helsinki, Finland(See document for exact affiliation information.)
AES Convention: 111 (November 2001) Paper Number: 5449
Publication Date: November 1, 2001
Subject: Instrumentation and Measurement

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