NDLI: Implications of VLSI technology for speech processing

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Implications of VLSI technology for speech processing

Content Provider	ACM Digital Library
Author	Brodersen, Robert W.
Abstract	In this paper a survey will be made of the state of the art of the application of MOS technology to speech-processing circuits. Projections will be made of the future capabilities of this technology and how it relates to implementation of speech-processing algorithms. The most significant difference between the design of speech-processing systems of the past and the VLSI systems of the future is that VLSI technology can allow essentially complete integration of the system, including the interface circuits, the signal processor, and maybe even the transducer. This implies a major change in system design methodology since many of the most important advantages of VLSI technology will not be realized if each portion of the system is optimized without consideration of the other components. To cope with this problem, designers have in many cases over-simplified the constraints of the other system aspects in order to focus on their particular interests. Several examples will be given of computational techniques, developed for general-purpose computers, that now may become obsolete because of the new constraints of special-purpose VLSI chips. Very large-scale integration (VLSI) has come to mean very different things to different people, and a review will be given of some of the interpretations that are presently in vogue. To many (particularly the computer science community), VLSI implies a technology that has the capability to generate chips of such complexity that the designer of VLSI chips is freed from the constraint of minimizing the circuit area, an almost religious preoccupation of the industrial circuit designer. This then allows a variety of new design styles, such as PLAs, gate arrays, and silicon compilers, that have the capability for a high degree of computer automation. On the other hand, the digital signal processing algorithm community views VLSI as the level of integration that will finally allow low-cost implementation of some of their algorithms. VLSI will therefore finally make possible the development of applications of digital signal processing that will have widespread use. To the technologist and industrial I.C. designer, VLSI refers to an integrated circuit that has more transistors than some arbitrary number that ranges from as low as 1,000 logic gates up to circuits that contain more than 100,000 gates. Often a primary reason in the industrial community for determining whether a chip is of VLSI complexity is the aggressiveness of the public-relations and marketing activity associated with the design. An attempt will be made to integrate these various viewpoints to gain a broader perspective on what the actual impact will be of the future developments of the technology.
Starting Page	645
Ending Page	645
Page Count	1
File Format	PDF
ISBN	0882830392
ISSN	00956880
DOI	10.1145/1500676.1500755
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1983-05-16
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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