Message-ID: <004601bfc3c4$6ebc3e20$de1886d4@kevin>
From: "Kevin Ravenhill" <kevin.ravenhill@ukonline.co.uk>
To: "LF Group" <rsgb_lf_group@blacksheep.org>
References: <006201bfc359$2a3a9050$0a00a8c0@server1.ThreeLakes.ca>
Subject: LF: Re: Morse tones / filters etc.
Date: Mon, 22 May 2000 09:01:42 +0100
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> a visitor told me the "sweet spot"
> was probably were the two ears were copying best was were there was a
phase
> shift in the audio approaching 90 degrees thus giving what we now know is
> the extra sensitivity of the I and Q channel reception condition.
>
> Larry
> VA3LK

I have also experienced noticeably easier copy of weak CW in noise when at a
distance from the headphones - in fact I find that turning up the AF gain a
bit and leaving the headphones on a table provides an effective method of
monitoring activity whilst doing other things. I must admit, though, that I
have not been aware of any definite "sweet spot" whilst moving around the
room.

Has anyone experimented with phase shifted / delayed audio, i.e. with "raw"
audio fed to one half of the headphones and a (variably) phase-shifted /
delayed version fed to the other half?

Kevin
G1HDQ