离散时间信号处理Discrete Time Signal Processing 第三版 英文版和中文版 Oppenheim奥本海姆牛人Proakis普罗克斯编写的《Digital Signal Processing, Principles, Algorithms and Applications》（数字信号处理-原理、算法与应用）的第四版的英文版和中文版。英文版第四版为2006年，中文版（第四版）为方艳梅 等译2007年的。值得学习。
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