Effacer les filtres
Effacer les filtres

How could I create a sliding window of 300ms, with an overlap of 50ms?

23 vues (au cours des 30 derniers jours)
GOTOTO le 24 Jan 2022
Commenté : GOTOTO le 15 Sep 2022
Hello, I have an Emg data of 15mins length (1808331x12), sampling frequency : 2kHz. I want to apply a 300ms window(600samples) with an overlap of 20samples(10ms). I want 300ms segments so i can extract features from it.
Can somebody help me?

Réponse acceptée

Pratyush Roy
Pratyush Roy le 27 Jan 2022
Hi JJyh,
You can extract the data from individual windows and store them in a cell array. The following code might be helpful to understand how to store data from individual windows in a cell:
emg_data = randn([1808331,12]); % Here I have used random data since I don't have the original data on my end. This can be replaced by the data array that you are using.
[r c] = size(emg_data)
n_start = 1;
window_size = 600;
overlap_size = 20;
frame_cell = {};
while (n_start+window_size<=r)
window = emg_data(n_start:n_start+window_size-1,:);
frame_cell{end+1} = window;
n_start = n_start + window_size - overlap_size;
Hope this helps!

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