How to calculate mean frequency and amplitude between a period of a particular time interval.

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Akshat Shrivastava 2018-8-2

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评论： Akshat Shrivastava 2018-8-3

I wish to calculate mean frequency and amplitude in a particular interval of 5 seconds. i have a text file which has 2 columns (time and electrical activity). Please help me out with the code or syntax. Thank you. :)

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Akshat Shrivastava 2018-8-2

So far, i have used this code :

[fid,msg] = fopen('Rose.txt','rt');

assert(fid>=3,msg)

C = textscan(fid, '%f%f', 'CommentStyle','#', 'CollectOutput',true);

fclose(fid);

M = C{1};

Now i need to calculate the frequency and amplitude for a period of 5 seconds from a particular time. Kindly help me out. Thank you :)

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Answer 1

Peter Perkins 2018-8-3

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I'm guessing you want to use readtable, convert the result to a timetable using table2timetable, and then either use a timerange subscript to compute mean over one period, or use retime to compute means over all 5sec periods.

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Akshat Shrivastava 2018-8-3

@ Peter Perkins: Thank you for the suggestion, could you please also tell me the syntax/code for function you mentioned. (As per the code i mentioned above). I would be really grateful . Thank you :)

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