adaptfilt functions
显示 更早的评论
I use different adaptfilt functions for my project, but I have to a little bit change them. Therefore I kindly ask somebody to advise me, how I can view these algorithms mathlab original code or how I can change their coefficients before filtering:
For example I tried to add >ha.coefficien(1)=0 command with changing persistentmemory before filtering:
>ha = adaptfilt.lms(32,mu); >hd.persistentmemory = true; >ha.coefficien(1)=0; >[y,e] = filter(ha,x,d);
But it didn't work and coefficients keep intitial codition.
Thanks in advance for your advice
回答（1 个）
Honglei Chen
2011-7-5
Hi Peter,
Maybe I understand it wrong but you cannot directly change LMS filter's coefficients because it is updated in each iteration. To specify the initial filter coefficients and states, you can use the syntax
H = adaptfilt.lms(L,STEPSIZE,LEAKAGE,COEFFS,STATES)
See
help adaptfilt.lms
doc adaptfilt.lms
for details.
HTH,
2 个评论
Shravan Anand Komakula
2019-9-3
Undefined variable "adaptfilt" or class "adaptfilt.lms".
ha = adaptfilt.lms(30,mu);
"How to deal with this error"
Honglei Chen
2019-9-4
Do you have DSP System Toolbox? You need that to be able to access adaptfilt.
HTH
类别
在 帮助中心 和 File Exchange 中查找有关 Signal Processing Toolbox 的更多信息
2019-9-4
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
