This paper describes a very efficient software tool for real-time multichannel convolution. This software is applied to the reproduction of Ambiophonic surround sound. The program runs on a Windows based PC using compatible sound cards. The binaural input signal is acquired by the sound card and then processed by the software producing outputs for the stereo-dipole and for the surround loudspeakers. Using state of the art PCs is possible to achieve set-ups with more than 10 loudspeakers and simulate room impulse responses larger than three seconds.
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