[Boatanchors] TURBO RANGER FS
Bry Carling
bcarling at CFL.RR.COM
Thu Mar 13 08:08:51 EDT 2008
> in this case-denotes audio of a higher quality than 'ordinary' audio
>(whatever that means)
Ordinary audio is 300 to 3000 kHz at the -6dB points.
or worse, 300 Hz to 2.3 kHz with a narrower filter.
Decent audio reproduction for all sounds, is "hi-fi" audio
which denotes 20 Hz to 20 kHz at the -3dB points.
For voice you really don't need that. Even for music, the AM
broadcasters got by with a 10 kHz upper limit for their audio
for many years, and we all tolerated it. After all, our car
radios were tinny soung through those 3" X 5" and 4" X 10"
elliptical speakers anyway!
Then came FM and we realized what full range audio can
sound like - much better!
Similarly hams like a bit more fidelity.
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