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Subject: Re: [motm] Re: lag as EF

From: jwbarlow@...
Date: 2000-07-20

In a message dated 7/19/2000 11:31:13 PM, elhardt@... writes:

>> Well I could be wrong, but once the Lag Processor is available, won't
>you
>> have the makings of an envelope follower?
>
>perpetual@... writes:
>>>enh? do enlighten...<<
>
>I thought somebody else would chime in before I got back to this. I would
>assume if you run a guitar or mic or any other audio source into the lag
>processor, then connect the lag processors output to whatever CV destination
>you want to control, that is basically an envelope follower.

When I have run my preamped guitar through a lag processor the output is
filtered with like a simple 1 pole LPF.

I believe an envelope follower has (at least) full wave rectification since
an AC wave has no DC component. The rectifier, I think, would introduce a DC
component which was directly proportional to the amplitude of the input
signal. Clearly some filtering is needed to smooth out the "HF" stuff, but I
think that would be post rectifier -- note: I haven't looked at a schematic
of an EF in a long time, but I know that a LP will merely filter the audio
like a grainy tone control.

Too early!
JB