Re: Conducting FFT on a WAV file
- From: "Dave Robinson" <dave.robinson@xxxxxxxxxxxxx>
- Date: Mon, 3 Mar 2008 15:42:08 +0000 (UTC)
"Ken " <ken.brown@xxxxxxx> wrote in message <fqgous$r5
$1@xxxxxxxxxxxxxxxxxx>...
I am new to Matlab and wish to perform an fft on a wavthe
file. The file info is Fs = 11025, bits=16 and size=83200.
Can anyone provide some simple steps so that I can plot
fft output.
Thanks
Not knowing what you are trying to achieve, I might be well
off beam. However according to your figures, your WAV file
is over 7 seconds long, and while there is nothing wrong in
principle in doing what has been suggested, you should
consider the nature of your data. If for example it is a
sound track (e.g. speech or music) the data will have
continuously varying frequency components, and the FFT of
the complete waveform might well generate data that is next
to meaningless. It might make sense to consider breaking
down your waveform into much shorter sub arrays, and
applying an FFT to those, so you can track the frequency
domain modification as the wav file progresses.
If on the other hand You know exactly what you are doing -
then sorry for sticking my nose in.
Regards
Dave Robinson
.
- References:
- Conducting FFT on a WAV file
- From: Ken
- Conducting FFT on a WAV file
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