Pressure/Velocity Sensitive

[Magnus Danielson]

>>>>> "m" == marc  <torus at friko.onet.pl> writes:

 m> Hi all
 m> On begin - sorry for my funny english...

No worries!

 m> I'm new in the synthesisers world...
 m> My dream is to build complete Formant, but with modern parts and new
 m> ideas (preset, midi etc.).

Mmm... Formant. Having presets to such a thing could be a bit
challanging but maybe well worth it...

 m> I use 6 octave kbd for controlling synthesiser.
 m> On this time I have built power supply and 3 LFO's
 m> Now I design tempco VCO (with LM3046, LF412, TL08x) based on Rick Jansen
 m> design.

 m> I have some question:
 m> 1. what about Exar VCO XR-2207, XR-2209
 m> 2. what about ICL8048/9 Log/Antilog Amplifiers

The ICL8049 is quite well adapted for analog synths. The drawback is
that it (only) sweeps over 3 decades, that is 10 octaves... well, if
you want to use the VCO as a modulation source as well it would be
nice with a wider range...

The MAT-02 based exponential converter in the ASM-1 is similar to what
is in the ICL8049 and it sweeps almost 20 octaves.

The benefit of using a ICL8049 would be to get it all in one package,
the downside might be long term availablility I guess. Seems
interesting never the less.

Cheers,
Magnus