Topic: I'm getting an unwanted crackle

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Posted at August 22, 2003, 9:40 am:

So I'm trying to use the MF-101 with the CP-251 to randomly set filter cutoff values at a regular time frequency.

On the CP-251, I plug the Out1 from the Sample and Hold to the In of an attenuator. Then I plug the Out from the attenuator to the cutoff control input of the MF-101.

I plug a guitar to the audio input of the MF-101 and the amp to the audio output.

What I expect is for the sample and hold to grab a value from the noise generator and pass it through the attenuator to the control of the filter cutoff. I use the LFO on the CP-251 to set the frequency of the samples.

This all works as expected, except that I hear a distinct crackle sound every time the cutoff is changed.

Would anyone of you experts have any idea why I am getting this distortion? It's very noticable and is ruining what seems to be a patch with some real potenial.

thanks,
.pat

Original of the message was taken from http://www.moogmusic.com/forum/

Replies:

Try sending the CV through the Lag section as well.

Thanks! It worked great.

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