Audio Interpolation

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 micro- phones. The method is valid in anechoic environments. The inter- polated 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, addition- ally estimating the mixing parameters is shown to dramatically improve results for speech mixtures. Experimental results are pre- sented, and sample sound files can be found on the authors' web site (1). In this paper, our goal is to understand when there is enough infor- mation contained in the audio signals received at two microphones to produce the audio that would have actually been heard had a third microphone been present in the environment. We show that for anechoic environments, when the virtual microphone is located along ...