Hi,

I'm not sure. Noise has expected mean zero. Such way, averaging *can*
eliminate noise; you pay for it with decreased upper frequency limit. This
technique was discovered (or applied) I think by a Hungarian researcher
who made the first moon bounce experiment in 1946.

Regards,
Imre


On Sun, 8 Apr 2001, Matthew Mucker wrote:

> You can't filter out noise with DSP.  By definition, it's noise... there's
> no way to distinguish the noise from the desired signal.  The way to
> eliminate noise is to not let it in to begin with. :)
>
> (This was said to me by a soundcard engineer who was frustrated trying to
> get the digital folks to understand this about the analog audio signals.
> I'm just repeating it here, and have no expertise on this myself.)
>
> =Matt
>
> > -----Original Message-----
> > From: pic microcontroller discussion list
> > [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Mg
> > Sent: Friday, April 06, 2001 11:42 AM
> > To: PICLIST@MITVMA.MIT.EDU
> > Subject: Re: [EE]: Distortion of FM radio which close to PC
> >
> >
> > haha!
> > I too was having the same problem but now, all is solved. Work efficiency
> > has tripled now!
> > Your reply reminds me of old Scrooge... bah humbug!
> >
> > > > Anyone got any idea to cute this problem?
> > >
> > > Yeah, shut off the radio and concentrate on your work instead.
> > >
> > >
> > > ********************************************************************
> > > Olin Lathrop, embedded systems consultant in Littleton Massachusetts
> > > (978) 742-9014, olin@embedinc.com, http://www.embedinc.com
> > >
> >
> > btw: Surpressing noise in soundcards was mentioned in a long
> > running thread
> > a while ago on someone wanting to implement their own DSP using a pic.
> > Someone was saying that DSP methods are used on the soundcards to suppress
> > noise.
> >
> > -Mg
> >
> > --
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> >
> >
>
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>
>
>

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