[BC] Could our concept of audio be all wrong?

[Tom]

Thing is, on all those radios out there that have a fixed 75µs DE - 
emphasis, using 50 or 25 will make you sound... muddy, at best.

Better stick with 75. 

And if you use 50 or 25, then use equalization to compensate - you've 
defeated the purpose of switching to the lower figure...

Mark Humphrey wrote:
> Letter of the law from 73.317(e):
>
> Preemphasis shall not be GREATER (emphasis added) than the
> impedance-frequency characteristics of a series inductance resistance
> network having a time constant of 75 microseconds.
>
> So as I read it, 50 or 25 microseconds should be completely legal.
>   

-- 
Tom Spencer
PG-18-25453 (nee' P1-18-48841)
http://radioxtz.com/