Study on Digital Signal Processing about the Time-domain and Frequency Domain Technology Coordinate Overlapping Research
This article studies on original signal from Time-Domain to Frequency-Domain conversion process and their characteristics through FFT.Then it analysis the characteristics of the folding frequency,the greatest frequency resolution and the sampling frequency and their relations,It puts forward a algorithm through Conversion factor proportional to the number of coordinates.So,the Time-Domain and Frequency-Domain digital coordinates overlap.Computer let it easy to filter or extract a certain frequency in this process.The simulation shows that the method of signal processing provides a simple and practical realization of specific programs,which provides a new way of thinking to the current signal processing.