MATLAB: Segmentation of a signal

segmentation

I have row vector of ECG signal have 1 x n order. I want to make 200 segments of that row vector and each segment should contain 300 samples.

For example: First sample should contain values of row vector from 1 to 300, second sample should contain values of row vector 301 to 300 and so on.

How should I start?

Best Answer

Try this

signal200 = reshape(ecgSignal, [], 300);

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MATLAB: Dividing speech signal into short-time segments

If your sound signal is a vector, try to use reshape. For example from the info I understand that your sound signal would be a vector with 72000 elements which you want to divide in groups of 150.

SeperatedSoundSignal = reshape(soundSignal,150,72000/150);

This will convert your vector into 72000/150 columns which have each 150 elements/samples.

Kind regards, Baltam

MATLAB: Unable to perform assignment because the left and right sides have a different number of elements.

Since ecgBR has only one row, not n, you cannot do ecgBR(n, 1), which is the nth row in column 1. But you have 3600 columns, not 1, and 1 row, not 3600. Get rid of the ,1:

for n=5:numel(ecgBR)
    ecg_dif(n)=abs(ecgBR(n)-ecgBR(n-2));
    ecg_dif2(n)=abs(ecgBR(n)-2*ecgBR(n-2)+ecgBR(n-4));
end

Best Answer

Related Solutions

MATLAB: Dividing speech signal into short-time segments

MATLAB: Unable to perform assignment because the left and right sides have a different number of elements.

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