[sdiy] Truly white noise

[cheater]

On Thu, 24 Jun 2004 23:34:56 EDT, <Robotboy8 at aol.com> wrote:


>
> *Most people only need something that sounds like white noise.  For instance,
> a detuned radio.  No, it isn't white, but it sounds good enough to mix with a
> VCO before filtering.
>

Eh, I wouldn't say that's necessarily true. Try playing around with comb filters
on either.


> *White noise is only necessary (truly white, I mean) for testing, scopes,
> etc.  Most other applications - well, see above.
>
> *Obtaining truly white noise is difficult because most components
> (amplifying, etc) will color the spectrum.
>

Isn't it more about harmonic *content* (i.e. different harmonics) than how
apparent the harmonics are?

> *To get truly white noise, why don't we just build massive amounts of
> sinewave oscillators, record them all tuned hundredths of a cent off and phased
> slightly off from one another, then layer that recording over them all tuned an
> increment higher until we have literally every frequency we can generate?
>

Wouldn't it be easier to just make it in Mathematica? It has a wave output ability..

> *Would this truly white noise not be loopable at whatever smallest number
> ratio all oscillators have in common?
>

Try crossfading... I bet the human ear can't make out the difference between two
tracks of white noise :)