[sdiy] RE: cross-fades (was ...)

[Roy J. Tellason]

On Friday 16 January 2009 03:14:06 pm David Moylan wrote:
> You can also tie the wiper to ground
>
> in1 --\/\/\/\-----+------\/\/\/\/------+---------to summing amp
>
>                    <                    |
>
>                    <------Ground        |
>
>                    <                    |
> in2 --\/\/\/\-----+------\/\/\/\/------+
>
>
> Hope the ASCII art makes it through.
>
> Dave

Seems to me that's the way the "balance" control in a lot of stereo equipment 
works...

> Neil Johnson wrote:
> > Hi,
> >
> > Ingo Debus <igg.debus at t-online.de> wrote:
> >> Am 15.01.2009 um 23:58 schrieb mark verbos:
> >>>> Passive approach requires a ganged pot.
> >>>
> >>> or run both signals through resistors and after them have a single
> >>> pot with it's ends on the signals, post resistor and wiper to
> >>> ground. After this section, the two signals can be passively
> >>> combined with 2 resistors. It would help to combine them with an
> >>> opamp stage.
> >>
> >> Can't you just feed the two signals into either ends of a pot and
> >> grab the result from the wiper?
> >
> > This only works if the two source impedances are zero.  Otherwise you'll
> > never completely select one or the other source at the ends of pot
> > travel.
> >
> > Neil
> > --
> > http://www.njohnson.co.uk
> >
> > _______________________________________________
> > Synth-diy mailing list
> > Synth-diy at dropmix.xs4all.nl
> > http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy



-- 
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space,  a critter that can
be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James 
M Dakin