Description: Filter, by definition, is a wave filter devices. Wave is a very wide range of physical concepts in the field of electronic technology, wave has been narrowly confined to specific to describe various physical values change over time, the process of ups and downs. The process begins by the effect of various types of sensors, it is converted into a voltage or current function of time, known as the time waveform of various physical quantities, or call signal. Because the argument time is the continuous value, the so called continuous-time signal, used to call the analog signal (Analog Signal). With the emergence of digital computer (usually referred to as the computer) and the rapid development of technology, in order to facilitate computer for signal processing, resulting in a complete theory and methods under the guidance of the sampling theorem continuous time signal into a discrete-time signal. That is, you can only use the original analog signal sample values in a series of discr
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利用MATLAB设计巴特沃斯滤波器.doc
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