In article 0, Lostgallifreyan wrote:
"Phil Allison" wrote in
:

Audio band white noise is totally dominated by high frequency noise !!


White noise has equal amounts of all frequencies. We hear the HF dominate
because higher frequencies have more energy. (And because our ears are more
sensitive to it).

The noise voltage of many op-amps is almost flat from 1K to 100K, but below 1 K
it moves upward. I'm looking at the LF353 as it has a very low level of low frequency
noise, or at least the chart shows that. The AD711 has 18 nvHz at 1 kHz but
60 nvHz at 1 Hz.


greg