+ - 15 volt supply Soft Sync??? AND MORE...

[Magnus Danielson]

From: Harry Bissell <harrybissell at prodigy.net>
Subject: Re: + - 15 volt supply Soft Sync???
Date: Fri, 24 Dec 1999 16:38:21 -0500

> Hi JH...
> 
> The oscillators could possibly soft sync to the supply but it isn't likely if
> the switcher is a quality unit. A few ohms of series resistance and capacitors
> to ground should cure that entirely if that happened. I'm playing with TomG's
> VCO4d and a switcher and have no problems at all with the switcher.
> 
> Poor layout techniques, daisy chain grounds and power supply runs... lack of
> decoupling caps and (oh my) sharing components like quad op-amps among
> different VCOs will be far more damaging.
> 
> With some modern SMPS... the switching frequency is so high that I doubt you
> could hear the sync effect. I expect that the beating would stop at very close
> frequencies if there was a sync problem... right ???

Actually, both in a filtering sence and this sence the higher frequencies of
switching supplies a good thing.

Besides, some of the more loved synths (like MiniMoog) isn't exactly known to
be the precission works in all sences but this has not prohibited them from
being fully embraced and loved by their users for what they ARE.

One large question I think is comming up, what is happening to the synthesizer
buissness now that both higher dynamics (24 bit) and higher bandwidth comes
along on new digital media.

Cheers,
Magnus