Audio Delay Circuit

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And adequate tensioning mechanisms on both machines and God knows
what-all else, including a reason why to do it that way.

Seems a little bizarre for the OP\'s needs when for less than $10
worth of parts he can easily build it out of silicon.

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If you\'ve got pressure pads holding the tape against the heads,
perhaps.  If you don\'t, and you\'re using a tensioning arrangement to
do it, all of a sudden it doesn\'t look like such a good idea.

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Good luck finding tape with oxide on both sides...

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Ergo it _is_ goofy?

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The link to it\'s been posted twice already.  Get off your lazy ass
and find it if you\'re interested.

Yeah, that must be it.

Thanks, Rich

I'd be interested in seeing this circuit.

Thanks! Rich

I read in sci.electronics.design that John Fields wrote (in ) about 'Audio Delay Circuit', on Fri, 14 Oct 2005:

Yes, it can NOW; those techniques were used when it couldn't be done digitally.

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Regards, John Woodgate, OOO - Own Opinions Only.
If everything has been designed, a god designed evolution by natural selection.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk

3.75ips, for 5 second delay, would only be ~6 inches in diameter, rotating at 12rpm ;-)

Maybe you could slow down a hard-drive ?:-)

...Jim Thompson

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|  James E.Thompson, P.E.                           |    mens     |
|  Analog Innovations, Inc.                         |     et      |
|  Analog/Mixed-Signal ASIC\'s and Discrete Systems  |    manus    |
|  Phoenix, Arizona            Voice:(480)460-2350  |             |
|  E-mail Address at Website     Fax:(480)460-2142  |  Brass Rat  |
|       http://www.analog-innovations.com           |    1962     |
             
I love to cook with wine.      Sometimes I even put it in the food.

I am surprised that nobody has suggested an analog bucket brigade delay. These used to be made by Reticon and I think Panasonic still has them, the last time I looked in the Digi-Key catalog. Fidelity is not wonderful and biasing can be touchy. I don't know how many stages are still available.

Heaven sakes, Jim! I had to go back and check the thread to see what in the world you were talking about! :-)

But, yes, a drum would work too - see "G-15 drum memory":

Obviously, it would have to spin verrrrry sloooooowwwwwly... :-)

Cheers! Rich

This one?

Thanks, but Mouser, Digi-key, and Newark come up 0, and the one source that lists the chip (MX609P) is one of those "Register and give us your personal information before we'll tell you how much it is" sites.

Where do you buy yours?

Thanks, Rich

There were indeed proper drum based echo units.

Graham

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I don\'t, but if I did I\'d start with TI and Freescale.

That's two more zeros.

Apparently you can get them from surplus dealers, if you submit a(an?) RFQ.

Glad I'm not trying to build this thing.

Thanks, Rich

[snip]

In fact, couldn't you do this with a hard-drive? Isn't this the same thing as TIVO (DVR) but just audio?

...Jim Thompson

-- | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | |

| 1962 | I love to cook with wine. Sometimes I even put it in the food.

The "Echoplex" was a tube based echo unit for musicians in the '60s:

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?

Michael A. Terrell
Central Florida

ISTR getting one of those to service once. And a Binson Echorec too.

Graham

I repaired a bunch of them in the '70s, both tube and solid state.

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?

Michael A. Terrell
Central Florida