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Phil Allison
 
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Default Is my LT44 transformer suitable for audio (de)coupling?


"Lostgallifreyan"
"Phil Allison"

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


White noise has equal amounts of all frequencies.



** Wrong.

It has equal amounts of noise energy in equal amounts of bandwidth.

So, 50% of the noise energy is in the band from 10 kHz to 20 kHz.

90 % is in the band from 2kHz to 20 kHz.

95 % is in the band from 1 kHz to 20 kHz.

99% is in the band from 200Hz to 20 kHz.

Get it ?



We hear the HF dominate
because higher frequencies have more energy.



** No - because it does utterly dominates the energy spectrum.


........ Phil