Message-ID: <005001bfdc35$b3f7c480$2301a8c0@maly.cz.gmc.net>
From: "Petr Maly" <p.maly@gmc.net>
To: rsgb_lf_group@blacksheep.org
References: <E1353Ki-00000n-00@mserv1d.u-net.net>
Subject: Re: LF: Reference sound for shrinking
Date: Thu, 22 Jun 2000 12:36:19 +0200
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----- Original Message -----
From: Mike Dennison <mike.dennison@rsgb.org.uk>
To: <rsgb_lf_group@blacksheep.org>
Sent: Thursday, June 22, 2000 11:24 AM
Subject: Re: LF: Reference sound for shrinking


> > Does anybody have recorded sound of Visual-CW (as *.WAV with reasonable
> > length) where the signal is not hearable by ear? Could we have such a
> > reference sound to compare the results of processing? I would like to
try
> > to shrink the sound in SW like SoundForge or CoolEdit and compare
results
> > with the others, mainly with Bill.
> >
> > 73, Petr, OK1FIG
> >
>
> Petr,
>
> On my web site is a .WAV of a transmission made in 1998 by the
> late Peter Bobeck as DA0LF. The Morse has a 20s dot period. It is
> 1.3Mb and lasts for 2 minutes, during which he sends a dash and a
> dot! He is not quite inaudible but certainly would have been
> unreadable at normal speeds as the signal is only just perceptible.
> The page also gives spectrograms traces of the signal - absolutely
> 100% with no noise.
>
> http://www.dennison.demon.co.uk/da0lf621.htm
>
> 73
>
Thank you. It is not a typical sound we need to process, but I will try it
also. In any way, it will be a big honour for me to process Peter Bobek's
tranmission. Does he know....?

73, Petr

>
> Mike, G3XDV (IO91VT)
> http://www.dennison.demon.co.uk/activity.htm
>
>
>