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sliding window for a sampled signal

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Mohammad Wasi Ahmadi
Mohammad Wasi Ahmadi on 5 Jul 2017
Commented: Walter Roberson on 19 Oct 2018
I sampled a continuous signal by using rate transition block in Simulink. now, How can I calculate the maximum absolute value of previous i.e. 100 samples for each input sample. is there any simulink block? or should I use any digital filter and how?

Answers (2)

Rik
Rik on 5 Jul 2017
When you have the signal as a vector, you can use movmean to find the moving average. You can modify the window to only include the previous 99 values to get a 100 value wide window.
M = movmean(A,[99 0]);
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Mohammad Wasi Ahmadi
Mohammad Wasi Ahmadi on 5 Jul 2017
My signal is a time domain, not a vector. and I need the maximum value of previous 100 samples. I used the movmean and moving maximum blocks in simulink but they did not work and gives dimension error
Mohammad Wasi Ahmadi
Mohammad Wasi Ahmadi on 8 Jul 2017
I used movmax but the output is mxArray. how can I change to a double variable?

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Walter Roberson
Walter Roberson on 9 Jul 2017
Perhaps you could use a Buffer Block with overlap specified.

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