[sdiy] Famous Fixed Filters - FFF PCB ?

[Derek Holzer]

The Subharchord was the first thing I thought of when Jürgen presented 
the idea... The filters aren't exactly fixed, however, they have a range 
within which each filter can be set by the keyboard. From my original 
post on it:

Nr. 1: 200 ... 400 Hz
Nr. 2: 400 ... 625 Hz
Nr. 3: 625 ... 875 Hz
Nr. 4: 875 ... 1170 Hz
Nr. 5: 1170 ... 1550 Hz
Nr. 6: 1550 ... 1970 Hz
Nr. 7: 1970 ... 2420 Hz
Nr. 8: 2420 ... 2900 Hz
Nr.: 9 2900 ... 3450 Hz
Nr. 10: 3450 ... 4000 Hz
Nr. 11: 4000 ... 5000 Hz
Nr. 12: 5000 ... 6500 Hz
Nr. 13: 6500 ... 8000 Hz
Nr. 14: 8000 ... 10 000 Hz

It has an incredible sound, to be sure!

Jürgen's response was pretty positive, but I don't know if (like the 
Buchla Spectral Processor I also mentioned) it would fit into the spec 
of what he has planned. But, with your email, that's two votes for the 
Subharchord.

best,
d.

Michael Zacherl wrote:
> On 24.11.2007 19:47 Uhr, JH. wrote:
>> Hi -  I've been thinking about PCB projects for 2008.
>>
>> What dou you think about a collection of "Famous Fixed Filters"?
> 
> Hi Jürgen,
>   great idea!
> 
> Another thought came up recently:
> In November during the course of the Wien Modern festival here in Vienna
> ( http://wienmodern.at ) I had a chance to see and to listen to the east
> german Subharchord.
> This particular piece of ancient technology provides a subharmonic
> divider (down to 1/29) and a MEL-Filter bank.
> 
> I understand that this is way too big for your intended project, but did
> you ever consider recreating (the original is based on LC-circuits) such
> a filter bank?
> 
> To me it sounded very distinctive and colourful.
> 
> http://www.subharchord.com/sub_frameset/gebrauchsanweisung/Melfilter.html
> (sorry, just german language with some diagrams)
> 
> 
> just asking,
>     :-) Michael.
> 
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
> 

-- 
derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista
---Oblique Strategy # 28:
"Change nothing and continue consistently"