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Frequency modulating a wav file?

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George Smith
George Smith on 31 Jan 2011
Commented: isra on 8 Dec 2016
Hi, i'm trying to frequency modulate an arbitary input wav file with a periodic wave. I was wondering how to do this because basic maths for frequency modulation depends on simple sine waves and i'm trying to modulate a non periodic complex waveform?
Any help would be greatly appreciated!

Answers (3)

Siddharth Shankar
Siddharth Shankar on 31 Jan 2011
If simulink is an option, the FM Modulator Passband will do the trick.
If you have the communications toolbox, you can use the FMMOD function.
You could also consider this file exchange submission.
This is assuming that you've already imported the WAV file into MATLAB. If not, use wavread to do this.
  1 Comment
isra
isra on 8 Dec 2016
what if the audio file's content was no periodic, is it possible to FM modulate it?

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Vieniava
Vieniava on 31 Jan 2011
when .wav is one-channel (not stereo):
[x fs]=wavread('NonPeriodic.wav');
Fc=1e6; % carrier = 1MHz
FS=2.2*Fc; % sampling frequency for output signal
deviation=75e3; % freq. deviation
smod=fmmod(x, Fc, FS, deviation);
  1 Comment
isra
isra on 8 Dec 2016
what if the audio file's content was no periodic, is it possible to FM modulate it?

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jessica david
jessica david on 8 Mar 2011
hi, do you know how to perform fsk on a .wav file

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