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Real-Time Speech Coder Implementation on an Array Processor

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2 Author(s)
Wolf, J.J. ; Bolt Beranek and Newman Inc., Cambridge, MA ; Field, K.

The feasibility of a speech coding algorithm is most effectively indicated by its successful real-time implementation. The implementation effort presents issues distinct from those related to the development of the algorithm. Problems of real-time software design and debugging, system reliability, and implementation correctness must be addressed. In addition, the power of a general purpose array processing computer may be required to accomplish the real-time aspect of the implementation. The unique, often highly parallel, architecture of available array processors can present the additional issues of multiprocessor intercommunication and control. This paper considers successful approaches to these issues in the context of two real-time speech coder algorithms implemented on an array processor, a linear predictive baseband coder operating at 9.6 kbits/s, and an adaptive predictive coder operating at 16 kbits/s.

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Communications, IEEE Transactions on  (Volume:30 ,  Issue: 4 )