Waveslicer PCB/Panel

The Waveslicer can be described as some kind of special waveshaper. It can cut a wave into slices and move those slices up and down.

This is a PCB/Panel set suitable for the Eurorack format.

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The Waveslicer can be described as some kind of special waveshaper. It can cut a wave into slices and move those slices up and down. 

It simply does that by adding an offset at a defined point of the wave. This point is the threshold, set by the Pulsewidth pot. The amplitude of the offset is set by the Amount pot.   So for example if you have a sine wave of 10Vpp (-5V to +5V) and set a threshold of 2.5V and an amount of 1V, it will add an offset of 1V as long as the wave is above 2.5V.  To make it all symmetric, all that is also happening on the negative half of the wave, which means that in this example you will also have an offset of -1V as long as the wave is below -2.5V. 

All this is achieved by using two comparators in parallel, one with a negative threshold and one with a positive threshold. The output of the comparators goes through a VCA and is subtracted from the original input signal in the end. 

To make it all a bit more interesting, this is all done twice at the same time, so there are actually two waveslicers working in parallel. 
Also, every described parameter is fully voltage controllable. 

The maximum threshold of both sections can be altered by the Range pot. This option was added to be able to set an adequate range for the Pulsewidth pots. For example if you put in a sine wave of +/- 2.5V but the maximum threshold would be 5V, the pots wouldn't do anything above 12 o'clock. So you can set a maximum threshold of 2.5V and be able to use the full range of the Pulsewidth pots. 

All that is pretty hard to describe in theory, so see the pictures for a functional diagram.

This module was primarily designed as an audio waveshaper but it's DC coupled, so you can also use it for CVs. This can be a lot of fun, for example when mangling LFOs. 

From version 2.0, which is what's in stock, both sections of the waveslicers also have an Offset pot. This can add an offset to the incoming signal before it goes into the comparators. The offset is removed before the comparator outputs are subtracted from the original signal so the output will still move around 0V instead of being offset too. This is important, especially when using the module for audio signal.

Specs & Downloads

Specs & Downloads

Manufacturer Horstronic
HP 14
Depth No
+12V No
-12V No
+5V No
Additional Resources Build Guide


Customer Reviews (2)

Great Module, Low Cost + Easy BuildReview by Mr. Mojo Risin'
I was absolutely blown away by all of the amazing sounds I'm getting out of this module!
Three INs, four CV INs, three OUTs and eleven KNOBs enable a large array of different "Waveslicing" audio options.

A _Highly Recommended_ build for many reasons:
1) The creator really put some thought into the design of this PCB layout. He had the DIY people in mind. There are solder pads on the board which are double duty... resistors can be either SMD or mounted through hole. I wish more designers would offer this as an option
2) Likewise, the 3.5mm jack holes are quite versatile because they will accept either Thonkiconn, Erthenvar, PJ301BM, or Kobiconn jacks. Very cool when searching your inventory for available parts!
3) The overall DIY cost was very low because of all the easy to find parts. With the exception of two dual-color LEDs and one LM4040, I was able to find everything at Tayda. I hate builds which use SMD but this one was quite easy because none of the IC's are SMD. They're all through-hole. There are 24 SMD components (all capacitors)... but don't let that prevent you from getting this PCB/Panel. It was an easy build and it sounds great (Posted on 8/8/2017)
wild module, intermediate buildReview by isohedra
pretty wild module here. capable of doing really strange wave shaping.
very interesting results with LFO's in my opinion.

roughly an intermediate build. a fair amount of SMD work.
doesn't use ultra tiny SMD's, but a good idea to have prior SMD experience. (Posted on 9/26/2016)

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