![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhAwzfOpwpOp7zXnOFwZHODOg0t03878_7D7fvkL_-qSTBM3BhSCL0J9AgUSBi5mM7pbV3dk0fHcpuRn8imtwcblYBbNrkfes0SOiYHRcdCt-1iKtrEHmyy04FsuflL_cDuuV02K4DGkis/s400/quadslew.jpg)
As you can hear, it's great for removing the clicks you get when feeding a VCA with abruptly changing signals:
(before and after)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhS8_R3fu_RQg2Z_c7iz9HxTaSoFfUcTVtuGSzSWLo1WbYdB4Td23UaQEbAFRTzN43TReIEi2_0Ni9eUMn012xwG3i8s7ijy7lGmh3HPAhynKAd_G_zI30eyXL_4YxbprStWpfP3ZIgavc/s400/passiveslew.jpg)
Filters also benefit from 'softer' control. I built this as a companion to my Plan B M23 ASR, but you could also feed the quad slew with the outputs of a clock divider like the 4ms RCD and take these outputs directly to your VCA. A cheap and small alternative to tying-up four envelopes!
I used a 4k7 resistor and 1uF capacitor, but you could try other values for a more or less rounded result.
Thanks to fonitronik for the suggested values and help!
7 comments:
Feine Sache! Besten Dank!
Nice! Thanks Navs. This is perfect for the clicky horror I get when panning my A134 with the Noisering or S&H.
Nice! Thanks Navs. This is perfect for the clicky horror I get when panning my A134 with the Noisering or S&H.
Bitteschön!
Let this be an end to clicky horror!
This is awesome. Do you know what resister and capacitor combo it would take to have a longer slew rate (say 20 or more seconds)? I'm trying to get a fade in/fade out from a gate, like a switch or a flip flop.
Cheers, Roy. I'm sure there's a formula to calculate times, but you might be better just experimenting with larger values. There might be some suggestions in this thread: http://www.muffwiggler.com/forum/viewtopic.php?t=18842
cutoff frequency formula:
f=1/(2*PI*R*C)
so bigger values -> lower freq -> more rounding
cheers!
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