hello anton,

500 ms delays on a bbd-module would greatly decrease
the frequency range of the audio signal.
even the biggest bbd-based delays cannot output
frequencies greater than 1 khz with a delay time of 500 ms.
so digital delays are much better for such tasks.

best wishes

ingo



--- In Doepfer_a100@yahoogroups.com , "Anton Coops" <dubshot@x...>
wrote:

>
> Hi all,
>
> Before there were plans for several bbd-modules, but it sounds like
> there will be only one big fat extremely cool 'universal' bbd

module

> now Great news!
>
> Just one remark: personally I wouldn't mind an additional bbd
> module that's optimized for solid sound at delay times around 500
> ms or longer, but just as an extra, you know... ;-)
>
>
> On 13 Oct 2005, at 3:34, Bakis Sirros wrote:
>
> > hello david,
> > it's a Switched Capacitor filter. don't ask me though
> > anything more, i do not know. i guess that it sounds
> > quite different from the other filter modules dieter
> > best regards,
> > bakis.
> >
> >
> >
> >
> >
> > --- David Salter <david.salter@r...> wrote:
> >
> > > Fantastic.
> > >
> > > I'm really looking forward to the sound files for
> > > the BBD module, very
> > > interesting.
> > >
> > > I may have missed something but any ideas on what
> > > the " SC-filter " is
> > >
> > > Rgds
> > >
> > > David
> > >
> > > David Salter
> > > Senior Project Manager
> > > Reuters Ltd
> > > Tel +44 20 7542 2402
> > > Mob +44 7990562402
> > > email david.salter@r...
> > > RM david.salter.reuters@r...
> > >
> > >
> > >
> > > ________________________________
> > >
> > > From: Doepfer_a100@yahoogroups.com
> > > [mailto: Doepfer_a100@yahoogroups.com ]
> > > On Behalf Of Bakis Sirros
> > > Sent: 13 October 2005 11:14
> > > To: Doepfer_a100 group
> > > Subject: 1 latest doepfer news!
> > >
> > >
> > > dieter says:
> > > "we are very busy as we want to show some new
> > > modules
> > > at the NAMM in January. During the last few days the
> > > prototype of the BBD module was assembled, tested
> > > and
> > > corrected/improved and I'm confidential that it will
> > > be ready for NAMM. After the first tests with the
> > > new
> > > BBD circuits I have changed my mind (in my last
> > > messages I was not sure if we will manufacture a BBD
> > > module - now I am !). After playing with the
> > > prototype
> > > (which looks very confused in the meantime because
> > > of
> > > the many additional soldered parts and wires) I
> > > really love the imperfections and drawbacks of the
> > > BBDs. I can say that it can be a very extreme
> > > sounding
> > > module and it will be up to the musician to use it
> > > in
> > > a standard application (normal flanger/chorus/short
> > > delay) or beyond the usual conditions. E.g. the BBD
> > > circuits are normally allowed/specified for a
> > > minimum
> > > clock rate of 10kHz. Yesterday we modified the (of
> > > course voltage controlled) clock oscillator so that
> > > it
> > > can go down to a few hundred Hz. Completely strange
> > > sounds appear at low clock frequencies as the BBDs
> > > are
> > > operated out of their specifications. It sounds very
> > > lofi, a bit like a bit cruncher or a the A-112 at
> > > low
> > > clock settings. The reason for the strange sound is
> > > not only the low clock frequency but even the BBD
> > > behaviour as the 2048 capacitors of the circuit have
> > > "problems" to keep their charges as the clock
> > > frequency becomes smaller. In principle a BBD is
> > > made
> > > of a lot of capacitors (2048 for our module) and the
> > > charges are forwarded from one capacitor to the next
> > > one at each new clock. So it's nothing but an analog
> > > shift register but limited to a minimum clock rate
> > > of
> > > ~ 10kHz. At lower frequencies signal losses appear
> > > (in
> > > addition to the always existing poor signal of a BBD
> > > device). I will do some MP3's and publish them
> > > a.s.a.p.
> > >
> > > For the rest of this week the SC-filter prototype
> > > has
> > > to be assembled and tested and next week the core of
> > > the universal AD/DA module is planned (smd board
> > > with
> > > processor and delay memory) . I will give you
> > > details
> > > as soon as I know more.
> > >
> > > Since 2 weeks we even have much more web space
> > > available so that we will put more sound examples to
> > > our web site. But there are so many jobs to do and
> > > we
> > > have to decide what to do first.
> > >
> > > Best wishes
> > > Dieter"
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > GREAT or what
> > > Bakis
> > >
> > >
> > >
> > >
> > >
> > >
> > > Bakis Sirros
> > > Parallel Worlds
> > > Athens-Greece
> > > 1 group owner
> > > http://www.shimarecords.co.uk
> > > http://www.rubber.gr
> > >
> > >
> > >
> > > __________________________________
> > > Yahoo! Music Unlimited
> > > Access over 1 million songs. Try it free.
> > > http://music.yahoo.com/unlimited/
> > >
> > >
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> > http://www.rubber.gr
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