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单词 Linear filter
释义

Linear filter

中文百科

线性滤波器

线性滤波器用于时变输入信号的线性运算(en:linear operator)。线性滤波器在电子学和数字信号处理中应用非常普遍(参见电子滤波器中的文章),它们也用于机械工程和其它技术领域。

线性滤波器经常用于剔除输入信号中不想要的频率或者从许多频率中选择一个想要的频率。滤波器和滤波器技术类型非常广泛,这篇文章将给出一个总的描述。

不论它们是电子的、电力的还是机械的,也不论它们的频率范围或者时间尺度有多大,线性滤波器的数学理论都是通用的。

英语百科

Linear filter 线性滤波器

Low-pass filter implemented with a Sallen–Key topology
A discrete-time FIR filter of order N. The top part is an N-sample delay line; each delay step is denoted z−1.

Linear filters process time-varying input signals to produce output signals, subject to the constraint of linearity. This results from systems composed solely of components (or digital algorithms) classified as having a linear response. Most filters implemented in analog electronics, in digital signal processing, or in mechanical systems are classified as causal, time invariant, and linear signal processing filters.

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更新时间:2025/6/17 17:00:39