Abstract
A multi-processor system is described for the production of virtual sound fields using small arrays of up to four high-quality loudspeakers and up to four control microphones distributed around an artificial head and torso in a lightly damped listening room. The digital signal processing engine consists of four floating point processors interconnected for parallel computation, together with digital and analog converters. The performance of the system is analyzed in terms of the tradeoff between the maximum sampling rates that can be used and the complexity of the digital filter matrices in the different operating modes of the system such as system identification, single-input multiple-error adaptive filtering, and full multichannel filtering with fixed coefficients.
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