基于matlab的滤波器与均衡器设计.docVIP

Digital signal and analysis Title:A filter and equilizer Name: Yangxiao Class:Master of mechanical engineering 1302 Student ID: M201370503 Abstract:Designing some kinds of filters by using matlab.We can understand the signal processing of filter more comprehensive by analyzing the filtering properties of different filters.Designing an adjustable parameter of digital filter which is called equalizer.In this paper, the digital equalizer which is based on MATLAB platform designing has the functions of accessing Wav file , filtering and playing. Keyword:Matlab,Filter,Equalizer 1.Preface MATLAB is called Matrix Laboratory，which is designed by the United States MathWorks company.It’s a commercial mathematical software. Matlab can be use for Matrix operations, mapping functions and data, algorithm, creating the user interface, connect to other programming languages ??procedures, mainly used in engineering calculations, control design, signal processing and communications, image processing, signal detection, design and financial modeling analysis and other fields. GUI (Graphical User Interface, referred to as GUI, known Graphical User Interface) is displayed using the graphical user interface of computer operations.. Matlab has a powerful GUl tool. In this report, by using matlab GUI tool we could design a signal filter and equalizer. The filter Can be divided into low-pass, high-pass filter, band pass and band-stop filter.Low-pass filter: it allows signal in low frequency or dc component through, suppress the high frequency component or the interference and noise.High-pass filter: it allows the signal in high frequency , restrain low frequency or dc component.Band-pass filter: it allows a spectrum of signal through and restrain the signal below or above the spectrum, interference and noise.Band-stop filter: it inhibit the signal within a certain frequency ba