مقایسهٔ روش‌ها

	طراحی فیلتر IIR	فیلتر وینر
حوزه	پردازش سیگنال	پردازش سیگنال
خانواده	Process / pipeline	Process / pipeline
سال پیدایش	1966	1949
پدیدآور	Andrew Viterbi and Jim Kaiser	Norbert Wiener
نوع	Infinite Impulse Response filter design	Linear mean-square optimal filter
منبع بنیادین	Oppenheim, A. V., Schafer, R. W., & Buck, J. R. (1999). Discrete-Time Signal Processing (2nd ed.). Prentice Hall.	Wiener, N. (1949). Extrapolation, Interpolation, and Smoothing of Stationary Time Series. John Wiley & Sons.
نام‌های دیگر	IIR Design, Recursive filter design, Feedback filter	Wiener Optimal Filter, Kolmogorov-Wiener Filter, Mean-Square Optimal Filter
مرتبط	4	4
خلاصه	Infinite Impulse Response (IIR) filters are recursive digital filters that use feedback to achieve sharp frequency response characteristics with minimal filter order. Unlike FIR filters which depend only on past inputs, IIR filters also use past output values, allowing them to achieve steep rolloff with fewer coefficients. However, this feedback structure requires careful stability analysis.	The Wiener filter is an optimal linear filter that minimizes mean-square error between the desired signal and the filter output given knowledge of signal and noise statistics. Developed by Norbert Wiener in 1949, it provides the theoretical foundation for optimal filtering and remains the benchmark against which all other linear filtering methods are compared.