[sdiy] Filters

[synth at charlielamm.com]

Do you mean something like this:

http://www.nteinc.com/specs/1700to1799/pdf/nte1794.pdf (maybe another one
with better S/N ratio?)

....Where does one buy Dbx vca's on a chip?  Are they expensive?

BTW, I am working on a PCB based on the "Mike Irwin EDN" linear VCA, based
on the SSM2164.  The prototype I built works great, has almost no parts so
its small, and my thought was this could be used for a variety of things,
incl. controlling amplitudes of various feedback loops, for relatively
little dough, in applications like this.

--CL

On Sat, 3 Jan 2004, Magnus Danielson wrote:
>
> Have anyone considered the dBx VCA core? It seems to have a capability of a
> high dynamic range (I've heard numbers like 130 dB of dynamics mentioned) and
> would like a discussion on that in relation to OTA based things.
>
> Cheers,
> Magnus
>