[sdiy] Measuring filter response

[Paul Perry]

Note that the frequency scan does have to be "slow", because the filter will 
behave strangely otherwise.
Exactly HOW slow, I do not know.

paul perry Melbourne Australia

----- Original Message ----- 
From: "David G Dixon" <dixon at mail.ubc.ca>
To: "'Neil Johnson'" <neil.johnson97 at ntlworld.com>; 
<synth-diy at dropmix.xs4all.nl>
Sent: Tuesday, August 16, 2011 5:45 AM
Subject: Re: [sdiy] Measuring filter response


>I once read in an old textbook (pre-computer, pre-digital scope) about 
>using
> a slow sawtooth to ramp the filter frequency, and also using this saw to
> trigger the scope, then just feeding a sine to the filter and looking at 
> the
> response.  Has anybody tried that?
>
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