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Visualization of room reflections using a linear loudspeaker array and a single microphone

: Tuna, C.; Prinn, A.G.; Knauff, F.; Walther, A.; Habets, E.A.P.

Volltext ()

AES E-Library. Online resource (2020), Paper 10332
Audio Engineering Society (AES International Convention) <148, 2020, Online>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IIS ()

A class of reflector localization techniques use multichannel room impulse responses (RIRs) for the visualization of room reflections on 2D maps. In this paper, we focus on a setup comprising a linear loudspeaker array and a single microphone, which has become practically more relevant given the growing popularity of soundbars. First, the state-of-the-art visualization techniques developed for the generation of 2D time-domain direction-of-arrival (DOA) maps describing the temporal evolution of room reflections are reviewed, and then an alternative high-resolution mapping approach is introduced. The performances of the existing techniques and the proposed method are compared using simulated and experimental multichannel RIR data generated in various room conditions.