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Kindly help me to solve my problem below I again asking to experts.

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Yasir Ali
Yasir Ali 2019-2-3
编辑： Stephan 2019-2-3
Hello experts
I need your Help. I have wavfile of five seconds. I read it in MATLAB. Now I select 0.025 msec and plotted their spectrum, but I need frequency of that 0.025 msec.
plz tell me how to get frequency for that audio file. I want to know the frequency.
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Yasir Ali
Yasir Ali 2019-2-3
since Iam not familar with matlab programming , I want to say that I have five seconds audio file I read it in matlab now I selected 0.025 msec from them I need 0.025 msec frequency spectrum, In simple words I need frame by frame requency of audio , kindly help me to get frequency as I explained above.
Stephan
Stephan 2019-2-3
编辑：Stephan 2019-2-3
What sample rate is your audio recorded with? If i had to guess the sample rate, i would say 40 kHz.
Did you ever heard about the shannon theorem ?

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