hello anton, :-) this is also better done with a digital delay module. best wishes ingo --- In Doepfer_a100@yahoogroups.com, "Anton Coops" <dubshot@x...> wrote: > > I will stop complaining :-)) > > Just one question: the BBD-module has an external clock, and I > wonder if the frequency of this clock can be quantized with the a- > 156, or maybe with the a-148 for multitap-like use? > > Greetings > > Anton > > On 13 Oct 2005, at 13:39, Dieter Doepfer wrote: > > > > 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... ;-) > > > > Sorry - with the 2048 stages BBD this is not possible (and daisy- chainging > > several BBDs leads to additional noise). For 500 ms you would have to use a > > clock of about 4kHz for the 2048 stage BBD leading to a usable band-width of > > much less than 2 kHz. > > > > For such applications the planned analog delay/universal AD/DA module will > > be the right choice. Here we will have probably 4MB memory that leads to > > more than 10 seconds delay time even at 40 kHz clock rate (20kHz band > > width). It will also be voltage controlled but instead of a BBD 12 Bit ADC > > and DAC are used. You will probably be able to select a certain memory > > length: very short - e.g. only 8 ... 64 - for clocked CV-delay applications, > > up to several thousands for the typical chorus/flanging effects, and some > > hundred thousands up to millions for delay applications. The chosen memory > > will be written/read with the desired (voltage controlled) clock: a few Hz > > only for CV delay, some hundred to thousand Hz for lo-fi effects and some > > ten kHz for good quality flanging, chorus, delay and similar. A voltage > > controlled oscillator will be includede with probably 2 or 3 ranges for CV > > delay (some Hz, LFO range), lo-fi effects (some hundred to some thousand > > Hz), high quality effects (10 kHz up to ~ 100 kHz). So you are able to > > combine different lengths and clock frequencies to obtain the desired > > function. > > > > Best wishes > > Dieter > > > > > > > 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: [Doepfer_a100] 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 > > > > > [Doepfer_a100] 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/ > > > > > > > > > > > > > > > ________________________________ > > > > > > > > > > YAHOO! GROUPS LINKS > > > > > > > > > > > > > > > > > > > > * Visit your group "Doepfer_a100 > > > > > <http://groups.yahoo.com/group/Doepfer_a100> " on > > > > > the web. > > > > > > > > > > * To unsubscribe from this group, send an email to: > > > > > Doepfer_a100-unsubscribe@yahoogroups.com > > > > > > > > > <mailto:Doepfer_a100-unsubscribe@yahoogroups.com? subject=Unsubscribe> > > > > > > > > > > > > > > > * Your use of Yahoo! Groups is subject to the > > > > > Yahoo! Terms of > > > > > Service <http://docs.yahoo.com/info/terms/> . > > > > > > > > > > > > > > > ________________________________ > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -------------------------------------------------------------- --- > > > > > Visit our Internet site at > > > > > http://www.reuters.com > > > > > > > > > > To find out more about Reuters Products and Services > > > > > visit http://www.reuters.com/productinfo > > > > > > > > > > Any views expressed in this message are those of > > > > > the individual > > > > > sender, except where the sender specifically > > > > > states them to be > > > > > the views of Reuters Ltd. > > > > > > > > > > > > > > > > > > > > [Non-text portions of this message have been > > > > > removed] > > > > > > > > > > > > > > > > > > > > > > Bakis Sirros > > > > Parallel Worlds > > > > Athens-Greece > > > > [Doepfer_a100] 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/ > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > >
Message
Re: [Doepfer_a100] latest doepfer news!
2005-10-13 by selfoscillate