From obxwindsurf@yahoo.com Wed Oct 08 06:29:33 2003
Subject:Re: Next Generation Vibrato/Chorus Clone - reflections - I don't think so.

James,

Your approach to scanning a delay line sounds very cool - yet another
approach to solving a more than niche need among clone players.

From a pure impedance standpoint the R44 is significantly larger than
any resistance in the inductors, but you do pose an interesting
question. By floating the commons of all the caps above ground with
this resistor you effectively have an LCR network and no longer a
pure LC network.

As you have observed, from the standpoint of the phase shifts it
provides lifting the ground probably has no effect other than
affecting the mixing gain between a pure vibrato signal (resistor
bypassed) and the vibrato/chorus (resistor lifting the ground).

As another question, was your LDR scanner noisy or was it fairly
quiet (i.e. digital feedthrough noise). It would seem intuitive that
with the turn-on/off response of the LDRs you would have a relatively
quiet selection of delay line taps in addition to solving the cross-
blend problems previously discussed.

I would be interested in your observations.

Regards,
Kevin

> at all, it was about whether lifting the ground on the transmission
> line affected how it behaves.
>
> It would appear from that it has no effect.
>
> Regards
> James