How to Design a Moving average filter?

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mohsen 2014-2-1

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https://ww2.mathworks.cn/matlabcentral/answers/114442-how-to-design-a-moving-average-filter

评论： Osman Atay Öztürk 2021-8-24

采纳的回答： Wayne King

Hi everyone im kinda new with filter design in Matlab and in need of some help..

So basically i need to reduce the noise in an record and playback system based on DSP TMS320c6713.

Right now im stuck in writing the code for Moving average filter (exponential or simple). so can somebody help me out or give me some examples please.. I've been reading a lot and still dont seem to understand much!! Thanks in advance..

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pankaj jood 2017-6-22

M = movmean(A,k) M = movmean(A,[kb kf]) M = movmean(___,dim) M = movmean(___,nanflag) M = movmean(___,Name,Value)

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Wayne King 2014-2-1

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编辑：Wayne King 2014-2-1

在 MATLAB Online 中打开

To implement a simple causal moving average filter in MATLAB, use filter()

Ten-point moving average filter

B = 1/10*ones(10,1);
out = filter(B,1,input);

Adjust as needed for a different number of time steps.

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Christopher Bitikofer 2018-8-23

I think using filtfilt would work... I'm trying to figure something similar out

Osman Atay Öztürk 2021-8-24

windowWidth = 11; % Whatever you want.

kernel = ones(windowWidth,1) / windowWidth;

out = filter(kernel, 1, yourInputSignal);

How can I know this window width?

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