[sdiy] VCA signal analysis

Needham, Alan Alan.Needham at centrica.com
Mon Dec 9 15:53:17 CET 2013

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of ChristianH
Sent: 09 December 2013 14:39
To: synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] VCA signal analysis

On Mon, 9 Dec 2013 13:52:52 +0000 Neil Johnson <neil.johnson71 at gmail.com> wrote:

> A notch filter also allows you to spend your limited sensitivity and 
> resolution on exploring distortion artefacts.  You can pump a healthy 
> signal into your circuit (VCA, filter, telephone line, etc), notch out 
> the fundamental, and then turn the gain up so you can see the all the 
> annoying harmonics from the distortion mechanisms in the circuit.

And from the notch filter <gr>


On 9 Dec 2013, at 15:05, "cheater00 ." <cheater00 at gmail.com> wrote:
> How do you measure the distortion introduced by the self-made notch filter?

By connecting the output of the notch filter to the distortion analyser.

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