[sdiy] Re: About this LC filter formula questions

[John L Marshall]

I should have put a smily face in the last post. You would need miles and
miles of coax.

There was a commercially made "hose" delay.

Take care,
John
------------------------------------------------------------------
Pacific Northwest Synthesizer Meeting
August 9, 2003
www.sound-photo.com
------------------------------------------------------------------

----- Original Message ----- 
From: "Glen" <mclilith at charter.net>
To: "John L Marshall" <john.l.marshall at gte.net>; "jhaible"
<jhaible at debitel.net>; "Magnus Danielson" <cfmd at swipnet.se>
Cc: <synth-diy at dropmix.xs4all.nl>
Sent: Saturday, May 31, 2003 9:13 AM
Subject: Re: [sdiy] Re: About this LC filter formula questions


> At 11:46 AM 5/31/03 , John L Marshall wrote:
> >What would a really long length of coaxial cable do for you? RG-174?
> >
> >Take care,
> >John
>
> Here's a freaky idea:
>
> Build a "tube echo" with a large length of flexible plastic pipe, which
has
> been rolled into a coil. Connect one end to a small box which contains a
> speaker. At several points along the pipe, drill a small hole and insert
an
> electret microphone into the hole. Connect preamps (probably with some EQ)
> to each microphone. Then use your scanning circuitry to sweep back and
> forth among the various microphone signals. In other words, do the whole
> delay line with sound instead of an electrical transmission line
simulation.
>
> How's that for an unusual vibrato-chorus design?
>
> One thing's for certain, it's sure to have an "analog" character to it.
>
>
> later,
> Glen Berry