[sdiy] Delays: how?

[Ken Stone]

I'm going one step beyond this. I have a Schober Reverbatape. 1 record head,
and 3 playback heads. The mechanics already designed for loop tapes :)

Ken

>Or how about a nice low-tech analog solution?
>
>Old reel to reel tape deck (I'm sure you can pick one up pretty easily),
re-fitted with a variable speed motor, and a continuous loop of tape.  Vary
the tape speed for the delay time, vary the erase head current for the
feedback control.
>
>It might be a bit noisy, but I bet it will sound good as you modulate the
tape speed.
>
>Seb
>
>
>
>
>MED wrote:
>
>>         Okay, the BBD source seems to have dried up (along with the whole
>> "sounding horrible") and this raises the question: what now?
>> I want to make a delay with a decent time (something like 1 second).
>> Feedback should be adjustable from same level (feeding back until
>> hard-clipping catches it) to silent. Preferable would be control over
>> the feedback loop, like an effects chain (pitch shifting craziness, et
>> cetera)
>> I have the feeling that a modern-component delay will be a
>> some-decent-bit-number ADC into a LOT of shift registers (same number of
>> lines as the resolution of the ADC/DAC, times however many are needed
>> for the delay time) into a DAC. Is there a better technique? Preferably
>> something simpler?
>>
>> Should I just try to make a tape echo? How are *they* done? MM doesn't
>> have any schematics for the rolands, just vague descriptions that whet
>> one's appetite.
>>
>> -MED
>
>
_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au  
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