SUO Liang, LIANG Fang. AImplementation of a block processing mode of digital filter on DSP[J]. Journal of Applied Optics, 2011, 32(2): 206-210.
Citation: SUO Liang, LIANG Fang. AImplementation of a block processing mode of digital filter on DSP[J]. Journal of Applied Optics, 2011, 32(2): 206-210.
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AImplementation of a block processing mode of digital filter on DSP

  • Institute of Capturing &Processing Technology,North University of China,Taiyuan030051,China

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  • Symmetric finite impulse response (FIR) filter with astrictly linear phase characteristics and system stability is widely used in data transmission, image processing and other fields. Conventional digital filter based on single-point processing mode can process point signal in real-time. H owever, its processing speed is slow, and real-time performance is not very good when dealing with images, or voice frame signals. This paper proposes a block processing model to solve this problem. By analyzing FIR filter theory, a symmetric FIR filter was designed based on block processing mode, and implemented in the TMS320C5510 chip (a DSP chip). The filtering algorithm based on two-pointerscircular addressing was introduced, and the main program was given. Computer simulation shows that the block processing mode of the program significantly improves the processing speed of frame signal, and filtering performance is satisfactory.
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  • ［1］赵洪亮，卜凡亮，黄鹤松，等.TMS320C55x DSP应用系统设计［M］.北京：北京航空航天大学出版社，2008.ZHAO Hong-liang, BU Fan-liang, HUANG He-song, et al. TMS320C55x DSP application system［M］.Beijing: Beijing University of Aeronautics and Astronautics Press, 2008.(in Chinese)

    ［2］SEN M,KUO B H,LEE.实时数字信号处理［M］.卢伯英, 译.北京：中国铁道出版社，2005.SEN M,KUO B H,LEE. Real-time digital signal processing［M］. Translated by LU Bo-ying. Beijing: China Railway Publishing House, 2005. (in Chinese)

    ［3］杨健，张慧慧.基于DSP的嵌入式数采系统滤波算法设计与实现［J］.制造业自动化，2006,28(12):30-32.YANG Jian，ZHANG Hui-hui. Embedded DSP-based data acquisition systems filter design and implementation［J］. Manufacturing Automation, 2006,28(12):30-32. (in Chinese with an English abstract)

    ［4］赵红怡.DSP技术与应用实例［M］.北京：电子工业出版社,2007.ZHAO Hong-yi. DSP technology and applications［M］. Beijing: Publish House of

     Electronics Industry, 2007. (in Chinese)

    ［5］王华，张健.DSP原理及其C编程开发技术［M］.北京：电子工业出版社.2005.WANG Hua, ZHANG Jian. DSP theory and C programming technology［M］. Beijing: Publish House of Electronics Industry, 2005.(in Chinese)
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