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Re: [motm] Clock source schematics???

2002-01-12 by mark@indole.net

At 3:52 PM +0000 01/11/02, jhaible@... wrote:
>
>I guess my setup is similar to what many of you are doing, so just take
>it as another example for a working combination:
>
>Korg Electribe-S drum machine as master clock (Midi),

Really??  I would have never guessed you used gear like that!!

>Frostwave Fat Contoller sequencer to convert Midi clock to analogue Gate
>(which then is used as an analog master clock for the whole studio).
>Digital delay (TC Electronic D-Two - awsome delay !) also sync'ed
>to Midi Clock.

I like those too, but I've made a decision not to invest in any more
digital gear, or at least not new digital gear.  It's like setting money on
fire.

>I also tried the Blacet chip, and it works very well, too. I wanted to put
>it inside a "master clock" module, together with some S&H stuff.
>This is postponed because the Frostwave also has a handfull of
>divider ratios built in already, easily to be altered on the fly when
>the sequencer is running.
>
>My initial idea of building an analog sync (PLL) for a BBD delay
>is probably postponed for ever, since I got the D-Two. (;->)
>(I still use the wonderful Dynacord BBD delays, but the D-Two
>is doing most of the bread and butter stuff nowadays.)

Was that your idea?? :)  I don't have a Dynacord, but the BBD delays I do
have can make sounds I cannot reproduce using digital.  In fact, I can get
sounds out of the Korg SDD-2000 that cannot get out of any of my other
digital delays.  I believe the difference is that the SDD-2000 changes the
sample rate rather than the length of RAM in order to change the delay
time, just like a BBD.  For another example, the filters in the Lexicon
tape delay emulations are very good, but it just doesn't sound the same as
the reel thing.

I like the idea of a PLL synced BBD delay, but I don't know what math would
be required so that ratio between the input clock and clock driving the BBD
would result in a musical relationship such as a quarter note.

>This Garfield box - didn't it extract a clock from intelligent processing
>of audio signals ? Or was this a different box from the 80's ?

It has masking and threshold controls to extract a clock from a human
drummer or click track.  It has timing, comparator, and basic logic
functions, and a "memory" feature that can record up to a 1,000 beats.
While it probably was fairly sophisticated for its time, I'm not sure what
you mean by "intelligent processing".

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