Measuring intensity of sound

Question

Odrisso 2014-10-30

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https://ww2.mathworks.cn/matlabcentral/answers/160749-measuring-intensity-of-sound

评论： Image Analyst 2014-10-31

Hi All,

I have a wav file 100 seconds and I have another excel file where I marked some area of that wav file like 6 to 10, 15 to 18 seconds and so on. Now, I want to calculate the intensity parameters (like maximum , minimum, mean)of the marked area. Please give me a matlab code of how to do it.

Thanks

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Answer 1

Harry 2014-10-30

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https://ww2.mathworks.cn/matlabcentral/answers/160749-measuring-intensity-of-sound#answer_157186

在 MATLAB Online 中打开

Here is the code you need:

max_val = max(x);
min_val = min(x);
mean_val = mean(x);

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Odrisso 2014-10-30

Well, this is not the answer of my question. I know how to wavread. I need the procedure to learn how to measure intensity from that.

Harry 2014-10-31

在 MATLAB Online 中打开

Yes, sorry, please see Image Analyst's answer for the line I missed. In other words, x is my extracted signal:

x = fullSignal(index1:index2);

Please accept Image Analyst's answer, as he responded first.

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Answer 2

Image Analyst 2014-10-31

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https://ww2.mathworks.cn/matlabcentral/answers/160749-measuring-intensity-of-sound#answer_157190

在 MATLAB Online 中打开

extractedSignal = fullSignal(index1:index2);
theMin = min(extractedSignal);
theMax = max(extractedSignal);
theMean = mean(extractedSignal);

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Odrisso 2014-10-31

Thanks.

Well, I have an excel file of start and stop times. Now, how can I extract the sounds from the total signal by using the excel file?

Image Analyst 2014-10-31

You forgot to attach them so I can't do anything. Or I could spend my time to create something myself but I don't want to spend the time to do that when you could just attach yours in a few seconds of your time.

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