In this paper we describe a two-way audio communication system using arrays of microphones and loudspeakers to create a virtual acoustic window. We compare three different methods for capturing the sound: wave field sampling using a line array of microphones, an adaptive beamformer, and close-talk microphones. For sound reproduction, we employ wave field synthesis. In the paper we review the acoustic and perceptual requirements for a real-time virtual acoustic window system, and report results of a set of listening experiments performed with the system.
Authors:
De Bruijn, Werner; Haapsaari, Timo; Härmä, Aki
Affiliation:
Philips Research
AES Convention:
122 (May 2007)
Paper Number:
6995
Publication Date:
May 1, 2007
Subject:
Spatial Audio Perception and Processing
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