to get matlab code that reads a wav file recorded for 30 seconds and do time sequence for fs 44100

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Nega Ejjigu
Nega Ejjigu 2021-9-9
评论： Nega Ejjigu 2021-9-9
I want a matlab code that reads wav file recorded for 30 seconds and generates time sequence for sampling freq (fs 44100)
( just want to generate time sequence,thus to export t values that corresponding to amplitude of the wav file)
thanks

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回答（1 个）

Walter Roberson
Walter Roberson 2021-9-9
filename = 'YourFile.wav';
[y, fs] = audioread(filename);
thirty_secs = fs * 30;
assert(size(y,1) >= thirty_secs);
y = y(1:thirty_secs,:);
if fs ~= 44100
y = resample(y, 44100, fs);
end
Now y is the amplitude information for the first 30 seconds at 44100, even if the original was recorded at a different sampling frequency.
  1 个评论
Nega Ejjigu
Nega Ejjigu 2021-9-9
appreciated very much.
The code runs but I couldn't able to export array of t values for 30 seconds. My goal is to obtain sequence of thirty seconds in 10^5 . I went at open variables tab in matlab and clicked thirty-secs to export sequence of thirty_secs like each time array 1*10^5 ( prefixSeconds), 2*10^5 (prefixseconds0,.... prefix might be milli or watever.....
Thanks in adavnce for further assistance

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