How to plot sound versus time?

2014 1 27
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更新时间：2014 1 27
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Hello, I recorded voice by using
record = wavrecord(5*44100,44100,1);
and then I want to plot the record vector versus time.so I did
t = 0:1/44100:5;
plot(t,record)
But I am getting error that record and t matrix size are not same and so matlab can't plot that graph. How to fix this issue?
Error Message: Error using plot Vectors must be the same lengths.

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Wayne King
Wayne King 2014-1-27

0 个投票

You are defining t to run from 0 to 5 in increments of 1/44100, so it will contain 220501 elements (including 0)
Do this:
t = 0:1/44100:5-(1/44100);
plot(t,record)

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