Yahoo Groups archive

SergeModular

Index last updated: 2026-04-28 23:13 UTC

Message

Re: QUO as VCF?

2004-10-04 by Steve Ridley

> John P's right. I forgot about that function. The hold resumes where it
> left off, so there's no way this could be done with a filter circuit.

Yes there is. You just reduce the frequency to zero. I've
seen it done this way on an old cyclic panner, and it worked
quite adequetely.

How absolute is the Hold? If you use the QUO as
a cyclic panner and hit Hold when it's panned hard
left and come back an hour later, is it still there or
does it drift slowly?

> A quadrature triangle core with sine converters is the
> most likely implementation.

Is it? If the QUO is also used in the Frequency Shifter,
a pure sine output would be essential. I think the filter
method would give a less distorted sine wave.

Anyone know for sure?


Steve


--

Whatever you Wanadoo:
http://www.wanadoo.co.uk/time/

This email has been checked for most known viruses - find out more at: http://www.wanadoo.co.uk/help/id/7098.htm

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.