Count Will and I in. Bill and Will
--- In motm@yahoogroups.com, "JH." <jhaible@...> wrote:
>
> Hi,
>
> Here's an idea how I could possibly resurrect my Scanner Vibrato
project.
>
> Instead of taking another go on a dedicated chorus / vibrato module,
I could
> offer a full-fledged Interpolating Scanner with 9 stages, with an
option to
> have the inductors on the PCB to turn it into a Hammond Chorus/Vibrato.
>
> That way, the PCB can be used by both, Modular Synth users, and
those who
> are looking for a good Hammond Vibrato emulation.
>
> My original Interpolating Scanner is described here (8-stage version):
> http://jhaible.heim.at/tonline_stuff/jh_ipscan.html
>
> and the Hammond Vibrato Emulation is here:
> http://jhaible.heim.at/scanner_vibrato/jh_scanner_vibrato.html
>
> So the idea is to combine the two projects, hoping there will be enough
> demand for such a PCB to make it a project to be in the black,
commercially.
>
> The new version would have 9 stages of linear scanning (to fully
cover the
> 16 positions of the mechanical rotary Hammond scanner). The scan can be
> performed by ∗any∗ modulation source (LFO, envelopes, audio rate,
you name
> it) - not just with a LFO as in my earlier scanner vibrato.
> All the audio waveshaping capabilities of the Interpolating Scanner
would be
> preseved, as well. (Piecewise linear interpolation of fixed, or
modulated,
> breakpoints).
>
> The pcb would also include the footprint for 25 inexpensive
inductors, plus
> the buffer stages for makeup gain (required with cheap inductors;
unlike the
> original Hammond Line Box)
>
> All the interconnections between this inductor delay line and the
Scanner
> part would be done mechanically, with switches, just like the real
Hammond.
> (No more CMOS switch matrix.)
> This also allows to use the board for a generic interpolating
scanner with a
> jack for each stage's audio or CV input - with these inputs
normalized to
> the Inductor delay line's taps.
>
> No more SSM chips in the new version, either. VCAs will all be
discrete,
> built from transistor pairs. (9 transistor pairs like LM394 or similar
> required)
>
> Would this be an interesting project?
>
> JH.
>