d********g
发帖数: 2 | 1 假设我有impulse response, 想做curve fitting，求出difference equation, 有办法
吗?
多谢。 | f*******y
发帖数: 988 | 2 pade 逼近
【在 d********g 的大作中提到】
: 假设我有impulse response, 想做curve fitting，求出difference equation, 有办法
: 吗?
: 多谢。
| L****a
发帖数: 572 | 3 matlab has filter design toolbox. If it's FIR, you get zeros of the filters
by using matlab's filter design function. then put into Z polynomial, then it's
a polynomial representation of impulse response. isn't that curve fitting
of impulse response ?
【在 d********g 的大作中提到】
: 假设我有impulse response, 想做curve fitting，求出difference equation, 有办法
: 吗?
: 多谢。
| d********g
发帖数: 2 | 4 多谢.我用的是invfreqz.从frequency domain直接求coefficient.从结果看误差挺大的
. |
|
