CONVOLUTION OF A SIGNAL WITH WINDOW FUNCTION

2014 12 1
1 个回答
回答已采纳
更新时间：2014 12 4
11 次查看（30 天）

0 个投票

hello everybody! pls, help, HOW DO I PERFORM CONVOLUTION ON A SIGNAL WITH WINDOW FUNCTION OF WINDOW LENGTH 10msc.

1 个评论
显示 -1更早的评论 隐藏 -1更早的评论

lamawal Jonathan
lamawal Jonathan 2014-12-1
x= my signal
L= 80;%my window length of 10msec corresponds to 80 data point
w= ones(L,1); % using a rectangular window
conv_Signal = x * w; %convolution operation. but the output display the following error message Error using * Inner matrix dimensions must agree.
Error in AiAssignment (line 47) conv_Signal = x * w;. pls, can anyone help. i can't figure the problem with my code. thanks

请先登录，再进行评论。

请先登录，再回答此问题。

 采纳的回答

Image Analyst
Image Analyst 2014-12-1
编辑：Image Analyst 2014-12-1

0 个投票

star or star star is the convolution operator only in textbooks. In MATLAB you call a function to do convolution. Do this:
conv_Signal = conv(x, w, 'same');
You can also use 'valid' or 'full' depending on how you want to handle edge effects. If you want the moving average rather than the straight, standard convolution, use w/L as the second argument.

2 个评论
显示 无 隐藏 无

lamawal Jonathan
lamawal Jonathan 2014-12-2
thanks man this was really helpful. i'm learning matlab for the first time so i'm yet to get use to most of the basics.
lamawal Jonathan
lamawal Jonathan 2014-12-4
Hello! pls, can u help? i need some assistance with K-fold validation. i have three data set("EL", "MK", "Z0") each of which is a 1X1 matrix of length 20 data point. out of the 20 data, the first 10 data is silence audio and the last 10 data is speech audio. my required task is to perform K-fold validation with K=10. i'm further advised to split the data set into training and test sets keeping the training set balanced, with half "Speech" and half "Silence" audio samples. how can i approach this? any help will be deeply appreciated. thanks

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 AI for Signals 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by