R***r
发帖数: 322 | 1 【 以下文字转载自 Physics 讨论区,原文如下 】
发信人: rover (小喽罗 --- 有来有去), 信区: Physics
标 题: Re: [转载] 有谁能说说Fourier变换？
发信站: Unknown Space - 未名空间 (Sat May 29 14:50:25 2004) WWW-POST
Decompose a complicated "function" into a linear composition
of simpler forms?
It helps to pick out the most important "factors" --- terms
with a large "coefficient/amplitude" that affect the overall
"shape" most.
As an example:
(My guess) one can do the "active noise cancelling" by figuring
out the frequencies of the largest amplitudes |
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