problem regarding audio signal

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k.v.swamy
k.v.swamy 2012-8-21
hi all, can any one give me a solution,how to show that audio signal frequency lies between 20hz to 20khz.can i take the signal from any microphone and test the frequency in matlab.pl give me solution. regards k.v.swamy

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Azzi Abdelmalek
Azzi Abdelmalek 2012-8-21
编辑：Azzi Abdelmalek 2012-8-21
here an example for recording your voice
% Record your voice for 5 seconds.
recObj = audiorecorder;
disp('Start speaking.')
recordblocking(recObj, 5);
disp('End of Recording.');
% Play back the recording.
play(recObj);
% Store data in double-precision array.
myRecording = getaudiodata(recObj);
% Plot the waveform.
plot(myRecording);
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Azzi Abdelmalek
Azzi Abdelmalek 2012-8-21
configure your micro to your windows system. matlab will recognize it.
k.v.swamy
k.v.swamy 2012-8-21
thank you very much sir.

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