TAILIEUCHUNG - DSP A Khoa học máy tính quan điểm P17

Digital Signal Processors Until now we have assumed that all the computation necessary for DSP applications could be performed either using pencil and paper or by a generalpurpose computer. Obviously, those that can be handled by human calculation are either very simplistic or at least very low rate. It might surprise the uninitiated that general-purpose computers suffer from the same limitations. Being ‘general-purpose’, a conventional central processing unit (CPU) is not optimized for DSP-style ‘number crunching’, since much of its time is devoted to branching, disk access, string manipulation, etc | Digital Signal Processing A Computer Science Perspective Jonathan Y. Stein Copyright 2000 John Wiley Sons Inc. Print ISBN 0-471-29546-9 Online ISBN 0-471-20059-X 17 Digital Signal Processors Until now we have assumed that all the computation necessary for DSP applications could be performed either using pencil and paper or by a generalpurpose computer. Obviously those that can be handled by human calculation are either very simplistic or at least very low rate. It might surprise the uninitiated that general-purpose computers suffer from the same limitations. Being general-purpose a conventional central processing unit CPU is not optimized for DSP-style number crunching since much of its time is devoted to branching disk access string manipulation etc. In addition even if a computer is fast enough to perform all the required computation in time it may not be able to guarantee doing so. In the late 1970s special-purpose processors optimized for DSP applications were first developed and such processors are still multiplying today pun definitely intended . Although correctly termed Digital Signal Processors we will somewhat redundantly call them DSP processors or simply DSPs. There are small low-power inexpensive relatively weak DSPs targeted at mass-produced consumer goods such as toys and cars. More capable fixed point processors are required for cellular phones digital answering machines and modems. The strongest often floating point DSPs are used for image and video processing and server applications. DSP processors are characterized by having at least some of the following special features DSP-specific instructions most notably the MAC special address registers zero-overhead loops multiple memory buses and banks instruction pipelines fast interrupt servicing fast context switch specialized ports for input and output and special addressing modes . bit reversal . There are also many non-DSP processors of interest to the DSP implementor. There are convolution .

• Kĩ thuật Viễn thông
• DSP
• khoa học máy tính
• quan điểm máy tính
• hệ thống xử lý tín hiệu
• kiến trúc tính toán
• Mixed signal
• and DSP Design Techniques
• Analog Devices
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• Lập trình DSP
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• Điều khiển động DC
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• Cạc DSP 1104
• Điều khiển động cơ DC dùng DSP
• Động cơ điện một chiều
• Fully DSP based control of an active voltage conditioner
• Active voltage conditioner
• Fully DSP based control
• Digital signal processor
• Floating point digital signal processor
• digital signal
• DSP Fundamental
• frequency analysis
• adaptive filtering
• software
• phương pháp DTC
• ứng dụng Logic mờ
• momen động cơ
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