14 FIR Digital Filter Design By Using Frequency （14 FIR数字滤波器设计通过使用频率）.pdf

Digital Filter Design (FIR) Using Frequency Sampling Method Amer Ali Ammar Dr. Mohamed. K. Julboub Dr.Ahmed. A. Elmghairbi Electric and Electronic Engineering Department, Faculty of Engineering Zawia University ُ ABSTRACT: The work reported in this paper deals with a finite impulse response FIR digital filter design using frequency sampling method. The frequency sampling method allows us to design recursive and non-recursive FIR filters for both standard frequency selective and filters with arbitrary frequency response. There are two distinct types of frequency sampling filters, depending on where the initial frequency sample occurred The digital filter is used to filter discrete time signals with the ability to modify the frequency response of the filter at any time and is used in many application such as data - 39 - University Bulletin – ISSUE No.15 – Vol . 3- 2013 FIR Digital Filter Design by Using Frequency Sampling Method ــــــــــــــــــــــــــ compression, biomedical signal processing, communication receivers, etc. keywords. FIR filters , Digital filter . Introduction : A filter is essentially a system or a network that selectively changes the wave shape, amplitude–frequency and/or p