Using only the audio signals from two real microphones and the distance separating them, we synthesize the audio that would have been heard at any point along the line connecting the two microphones. The method is valid in anechoic environments. The interpolated audio can be calculated directly, with no need to estimate the number of sources present in the environment or to separate the sources from the received audio mixtures. However, additionally estimating the mixing parameters is shown to dramatically improve results for speech mixtures. Experimental results are presented, and sample sound files can be found on the authors' web site, http://www.ecse.rpi.edu/homepages/rjradke/pages/ainterp/ainterp.html.
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