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<div class="moz-cite-prefix">On 9/10/2014 12:33 AM, Erik Anderson
wrote:<br>
<br>
</div>
<blockquote class=" cite"
id="mid_CAAeZAZ4A6wpaZD5_S2G5Q_G__DG5akMaZqA6VEq6HCSfk7cJeQ_mail_gmail_com"
cite="mid:CAAeZAZ4A6wpaZD5-S2G5Q+G=+DG5akMaZqA6VEq6HCSfk7cJeQ@mail.gmail.com"
type="cite"><i>Okay, I did just try this with FreeMat. I chalk up
my results to the unfamiliarity of the program; it sounds like
I'm hearing the negative side of the iFFT results, and I can't
understand what I'm saying (i.e. backwards, fair amount of
static), but it's a LOT more readable than I was expecting.</i></blockquote>
<br>
<br>
I have done the same with Matlab R2013a. First I digitized 4 seconds
of my voice with Adobe Audition at a sampling rate of 11025 Hz.<br>
Then I imported the WAV file into Matlab, computed an fft, then an
ifft, then wrote out the result as a WAV file, using these commands
:<br>
<br>
[y fs]=audioread('p:\audio\wav\4sec.wav');<br>
fy = fft(y);<br>
iy=ifft(fy);<br>
audiowrite('p:\audio\wav\4sec_fft_ifft.wav', iy, 11025); <br>
<br>
I placed both files on my Dropbox account :<br>
<br>
<a class="moz-txt-link-freetext" href="https://dl.dropboxusercontent.com/u/15089947/4sec.wav">https://dl.dropboxusercontent.com/u/15089947/4sec.wav</a><br>
<a class="moz-txt-link-freetext" href="https://dl.dropboxusercontent.com/u/15089947/4sec_fft_ifft.wav">https://dl.dropboxusercontent.com/u/15089947/4sec_fft_ifft.wav</a><br>
<br>
Judge for yourself... and please excuse my bad pronunciation....
English is not my first language...<br>
<br>
<div class="moz-signature">-- <br>
<i><b>73 Alberto I2PHD</b><br>
<small>Credo Ut Intelligam<br>
<br>
<br>
<br>
</small></i></div>
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