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From: Greg Heath <heath@alumni.brown.edu>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Separated the noise
Date: Fri, 26 Dec 2008 14:26:17 -0800 (PST)
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On Dec 25, 11:42=A0pm, ImageAnalyst <imageanal...@mailinator.com> wrote:
> On Dec 25, 11:13=A0pm, "Muhammad " <fahrudin_fis...@yahoo.com> wrote:
>
>
>
>
>
> > dear who considering
>
> > i write my simple code under my simple information of matlab function
> > and post the code in order to benefit other beginner
> > thanks
> > I have a problem and I hope any help for me
>
> > how to separated the original signal from its noise.
>
> > I have a =A0wave(.wav)
> > I blend it with noise.
> > my listing program :
> > y=3Dwavread(open.wav);
> > spect=3Dabs(fft(y,1024));
> > frek=3D linspace(0,22050,512)
> > plot(frek,spect(1:512));
> > % generate and mix the noise.
> > open_noise=3Dagwn(y,20);
>
> > Thank you.
>
> -----------------------------------------------
> Muhammed:
> I don't know the function agwn(). =A0What is it?

It's a misprint.

http://www.mathworks.com/access/helpdesk/help/toolbox/comm/ref/awgn.html

Hope this helps.

Greg