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This paper describes the design and application of a multiprocessor digital signal processing system. Incorporating six VLSI digital signal processors, the fully programmable system is a powerful laboratory instrument that provides real-time digital signal processing to facilitate speech and audio research. The system capabilities include: up to 15 million 16-bit multiply-accumulate operations per second; two analog input channels sampled and converted to 16-bit values each at the rate of up to 50 kHz; and two 16-bit digital-to-analog output channels with conversion rates to 50 kHz. The implementation of a four-channel hearing aid is described to provide an understanding of a typical application to which this system is well suited.
Acoustics, Speech and Signal Processing, IEEE Transactions on (Volume:34 , Issue: 2 )
Date of Publication: Apr 1986