[sdiy] Handy DIY tip #213/noise color

[Tim Ressel]

Tim, (great name by the way)

Yep, indeed. I remember an opamp datasheet that
bragged about the opamp's noise was lower than that of
a 50 ohm resistor.

--tr

--- Tim Parkhurst <tparkhurst at siliconbandwidth.com>
wrote:
> > -----Original Message-----
> > From: Edu Silva [mailto:bahi0387 at terra.com.br]
> > Sent: Tuesday, January 14, 2003 2:53 AM
> > To: synth-diy at dropmix.xs4all.nl
> > Subject: Re: [sdiy] Handy DIY tip #213
> > 
> > Ken Stone wrote:
> > >
> > > And make sure you use metal film resistors too.
> :)
> > >
> > 
> > The blue ones, and you will get "blue noise"!! 
> :-)
> > 
> > 
> > Edu Silva
> > http://audiolist.cjb.net
> > 
> 
> An EE friend of mine told me once you actually could
> make a noise source by
> simply using a long string of resistors. A bunch of
> carbon film units, and
> then amplify the signal and you're all set. They
> apparently generate a small
> amount of "thermal noise" but you'd need over 100
> resistors to get something
> even worth amplifying. I think a crappy (hand
> selected to be crappy, of
> course) zeener is a much easier method. ;)
> 
> Tim Servo (furiously searching for red, white and
> blue resistors for his
> tunable and very patriotic noise source)
> 
> "Imagination is more important than knowledge." -
> Albert Einstein
> 
> 
> 
> 
>
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