"Dave" wrote in message
...
Telamon wrote:
In article ,
"Smokey" wrote:

For years I have left a radio on an unused frequency, just the ambient
noise and static crashes. I started doing this as a kid. I didn't know
why it helped me sleep so well but it did.

Then I walked into a Sharper Image one day and find they called them
"white noise sleep enhancers."

Why didn't I think of that?
A diode switching on and off generates broadband white noise.

So does tuning an FM radio between stations.

Technically, that's pink noise. White noise is all frequencies at the same
amplitude. FM interstation noise is a lower amplitude at the high end of the
audio spectrum.