A lag is an integrator, which in a mumbo-jumbo way is a one-pole low-pass
filter.
I'm no EE, so I can't explain this as well as others might.
Even a fluctuating DC voltage has a "frequency" identity to it. A
steady-state voltage is a signal with an infinitely long period, hence it is
like zero hertz. A slowly moving voltage has a super-low sub-audio
frequency. So the 1-pole (6db) integrator is making that voltage 'lag'
because it is filtering out all of the "high frequencies," which may be very
very low in audio terms. High frequencies mean fast movement and low, slow.
(This is a terrible explanation but I've just had two Starbucks Vente
Frappuccinos and my brain is all over the place).
The opposite of a lag integrator is a differentiator, which rolls off low
frequencies and emphasizes high ones, or in the CV case, faster-changing
voltages. I wish I could play with a differentiator... probably will make a
simple one some day. I don't think it's nearly as useful as a lag but
anything that does something to CV's or sound is useful.
-----Original Message-----
From: Chad Conger [mailto:
lordgrimley@...]
Sent:Tuesday, 20 June, 2000 3:14 PM
To:
motm@egroups.comSubject:[motm] lag processor question...
A while back there was some discussion about the uses of a Lag processor,
and I remember one of the uses was using it as a 6 db filter... How does
a lag processor act like a filter? I'm rather foggy on that.