hello tom,

basically the only difference is the possible minimum/maximum
delay time. the bbd with 1024 stages offers shorter delays
than the 2048 stages version. i cannot say much about the
maximum delay time, because with long delay times you will
hear the clock noise and i assume that you don't
want this to happen with slapback delays.

best wishes

ingo



--- In Doepfer_a100@yahoogroups.com , "thomasborax" <thomasborax@y...>
wrote:

>
> hello ingo and others-
> could you describe to me in more detail than is available on the
> doepfer webpage what the differences, advantages and disadvantages
> would be between the two different bbd ics
>
> i prefer a longer delay time, as i would use a slapback and or
> reverb/delay effect more than i would use chorus.
>
> your sound files were helpful, thank you.
>
> ---tom
>
> --- In Doepfer_a100@yahoogroups.com , "selfoscillate"
> <synaptic_music@y...> wrote:
> >
> >
> > hello all,
> >
> > first, a merry christmas to everybody :-)
> >
> > the a188/1 is a very exciting module, especially
> > because it is not limited to standard flanger,
> > chorus or reverb effects.
> >
> > i have prepared some examples, recorded directly from the
> > output jack of the prototype (using a 1024 stages bbd ic).
> > sorry for the brief descriptions.
> > oh well, it's christmas... :-)
> >
> > 1.
> > karplus-strong synthesis, based on the example patch
> > as published on the doepfer homepage. this is an
> > example for plucked sounds.
> >
> > http://www.selfoscillate.de/a100files/a188-1-karplus-pluck.mp3
> > file size: 195 kb
> >
> > 2.
> > a single a110 sawtooth through the a188/1, delay time modulated
> > by a triangle lfo.
> >
> > http://www.selfoscillate.de/a100files/a188-1-sawplus.mp3
> > file size: 210 kb
> >
> > 3.
> > a single a110 squarewave through the a188/1,
> > no delay time modulation, but obscure parameter values ;-)
> >
> > http://www.selfoscillate.de/a100files/a188-1-spooky.mp3
> > file size: 301 kb
> >
> > 4.
> > this is a self-oscillating a188/1, the module gets no
> > audio input. the delay time is modulated by an a149/1.
> >
> > http://www.selfoscillate.de/a100files/a188-1-selfplay.mp3
> > file size: 295 kb
> >
> > 5.
> > now my favorite. a drum pattern coming from a tr808
> > is fed into an a119 and from there into the a188/1.
> > the a119 env output is fed into the a188/1 cv in 2.
> > both delay time and cv 2 polarizer knobs were slowly
> > adjusted by hand during recording, to give an idea of
> > the sonic potential. in the beginning it sounds like
> > flanging, with decreasing clock frequency it falls into
> > a mixture of granular synthesis and bit-reduction.
> > the signal seems to fall apart and then rebuilds under
> > rhythmic control of the 808 signal level.
> > halfways through the recording the a188/1 audio input
> > attenuator is turned further clockwise for some
> > overdriven sounds.
> >
> > http://www.selfoscillate.de/a100files/a188-1-follow-the-808.mp3
> > file size: 2110 kb
> >
> > have fun everybody :-)
> >
> > best wishes
> >
> > ingo
> >
>