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

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.

[Image Analyst]

If you plotted the spectrum, then you have the frequency. You have the strength of the signal in every frequency present in your signal. Just use the index to get the strength of any frequency you want. I guess I don't understand where your trouble lies, because it sounds like you already have what you need and are asking for. I don't know what you did but I'd try spectrogram() or fft() or pwelch().

[Yasir Ali]

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]

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 ?