| Summary: | 碩士 === 中原大學 === 電機工程研究所 === 82 === We expected the coming spring of the delay line. In the recent
years,new technology of communication and signal processing has
been booming extremely fast, On digital communication and data
storage system,either in image,voice or multimedia,as a rule it
needs the smallest bandwidth and highest quality to meet man's
demand. During procedure of the digital signal processing,the
sampling rate of coding process can influence the transmission
bandwidth.Under the limitation of the Nyquist rate , the
Shannon's sampling is unavoidable to cause distortion for
signal's encoding and decoding. On the other hand,the
conventional subband system was designed through numerical
analysis,where as mentioned above the percision is limited by
the sampling rate.Though these hardware designs are not so
difficult ,yet the software are usually very complicated and
ineffective. In this thesis,the research is based on Waveform
Abstract theory to develop new application,named "Continuous
Time Z- Transform".It utilize this theory to realize a new
abstracting delay line,abstracting filter and continuous
subband system. The main difference is the signal transmission,
in which it is sampled by the waveshapes.By the method,it can
reduce the transmission bandwidth and increase the transmission
rate successfully. In this thesis,it provided the filter
designed by computer simulation and the hardware circuits,to
prove the theory of abstracting filter and the possibility of
realization of an advanced system.
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