| Because of the obvious disadvantages of traditional digital signal processor such as poor expandable capability and a much higher price, we have designed PC_based digital signal processing instrument, according to the principle of digital signal processing and methods of computer. The virtual digital signal processing instrument is developed with VC++ 6.0 and Matlab 6.0 in windows 98.The system has realized signal generator, signal's sampling and averaging function, signal's power spectral density and cross special density analysis, the design and application of digital filter, signal analysis in time, frequency and inverted frequency domain. The instrument has good expansion ability and friendly interface, which can be manipulated conveniently.
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