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Message-ID: <11gPHDANOAP5EwgM@pickmere.demon.co.uk>
Date: Mon, 5 Jun 2000 20:46:21 +0100
To: rsgb_lf_group@blacksheep.org
From: "M.J.Powell" <mike@pickmere.demon.co.uk>
Subject: Re: LF: Copying CW
References: <E12yyDT-00049o-00@mserv1b.u-net.net>
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In message <E12yyDT-00049o-00@mserv1b.u-net.net>, Mike Dennison
<mike.dennison@rsgb.org.uk> writes
>I have been playing around with feeding differently derived audio into 
>the two halves of stereo headphones with some interesting results. 
>I will report in detail when the tests are complete. In short, it is 
>certainly possible to improve headphone reception, both in terms of 
>close-in selectivity and resistance to static.
>
>One question. How do I make an electronic circuit to delay a 
>broadband audio signal by about one-thousandth of a second, 
>without resorting to DSP? Any genius out there with a simple 
>circuit? And yes I do know about the methods (that were originally 
>used for electric guitar echo) such as connecting the diaphragms of 
>a loudspeaker and a microphone by using a spring, and also the 
>tape recorder method.

The method we used at a TV station I once worked for was to use a long
corridor with a mic and a loudspeaker!

Mike
-- 
M.J.Powell