Sinisa, though your posts are always useful, some of the best,
it's also always fun to disagree with you!
In this case I can only assume we caught you sleeping or maybe
you've had a glass too many tonight (hi).
It's an established fact that the bulk of the power of audio
frequency is in the low tones (say, below 500 Hz), while the bulk
of the intelligence is in the area of 500 to 1800 Hz
(approximately). Indeed I've often filtered out the low tones so
that I could turn the volume up to a higher level without my
loudspeaker (or headphones) distorting from the excessive audio
power. This gave me greater intelligence from the received
signal.
Bottom Line, I fully agree with Mario! (this time)
73
Rick
-----Original Message-----
From: tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]On Behalf Of Sinisa Hristov
Sent: Monday, January 05, 2004 11:38 PM
To: tentec@contesting.com
Subject: Re: [TenTec] Orion Filter Controls
"Marijan Miletic, S56A" wrote:
> Speech energy is stored at low frequencies, intelligibility is
carried at
> high freqs
Well, I find "energy" and "intelligibility" quite interrelated,
i.e. one cannot have the later without the former.
> and middle range around 1200 Hz can be notched.
True :-)
> Filter setting of 300-2000 Hz should be much better than
150-1850 Hz.
Should be so, although I wouldn't advance lower cutoff any
further,
unless QRM dictates so.
73,
Sinisa YT1NT, VA3TTN
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