is there a way to put some threshold and count the number of times whenever the signal becomes above the threshold?

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tamim
tamim 2022-12-14
移动：Jan 2022-12-14
is there a way to put some threshold and count the number of times whenever the signal becomes above the threshold, and depending on the number of times it takes some decision automaticlly
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Image Analyst
Image Analyst 2022-12-14
Sure. Use bwlabel if you have the Image Processing Toolbox.
[L, count] = bwlabel(data >= someThresholdValue)
count is the number of runs of your data at or above the threshold value.
Jan
Jan 2022-12-14
移动：Jan 2022-12-14
So currently you did not store the signal in a variable at all, but you directly plot it. Replace:
plot(recObj.getaudiodata());
by
signal = recObj.getaudiodata();
plot(signal);
Now you have a signal and can count the frames, which exceed the threshold.

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