Filter Sample and Hold HELP me!

[wui223]

I build the filter part first, it works but with a background 'eeeeeeeee' sound. HOW to cure this?

[Ry]

Does it sounds something like this?:
http://www.diystompboxes.com/sboxforum/viewtopic.php?t=34182&start=60

If so, I'm still working on a solution.

Ry

[wui223]

Some sort like but not exactly whinning. It is a constant hum , yours is more like pulse, sound_stop_sound, mine is sound......... all the way.
But the builder from Moosapotamus did got it work right without hum.

I use a NE5517N for Dual-OTA and TL072 for Dual-OPAmp

I just wondering what are the functions of the Resonance, Decay, Attack, Range ? Some of them dont seem to be working right.

[soggybag]

Are you using batteries or a wallwart style power supply? I had trouble with mine using a wall mounted power supply. The power supply introduced a hum, which is not present when using batteries. I still have a problem with the tick tick tick formteh LFO. If you find a solution to this let me know!

[wui223]

Are you using batteries or a wallwart style power supply? I had trouble with mine using a wall mounted power supply. The power supply introduced a hum, which is not present when using batteries. I still have a problem with the tick tick tick formteh LFO. If you find a solution to this let me know!

What is tick tick tick formteh LFO? i use battery, my friend need it urgently so i gotta make it this week. So any one know solution pls help, else he will bomb my house. HELP!