FoldR User Manual

This short manual explains how to use FoldR and what a wave folder does.
The key to using any wave folder is sublety!
If you dial all the controls up to 11 the result will be digital noise.

Read the Hints & Tips section to get up and running quickly. 
You can scroll and zoom this page and this manual is also available on our website www.livingmemorysoftware.com/foldrmanual.html.

Wave Folding

The simplified graphic above shows an input waveform at the top and the resulting folded waveform underneath.
Whenever the input exceeds the clipping threshold the peaks above or below the threshold are folded back on themselves with the effect of adding surprising harmonics to the original.
The greater the amplitude of the input the more folds happen and more harmonics are created.
Low frequency signals such as bass notes and low percussion react really well to Wave Folders. But it is easy to see why a very loud high frequency signal could soon be turned into noise during the folding process. Thus you need to take care with the input level in order to get best results.

Symmetry ( Bias )

To put it simply, the symmetry dial adds a positive or negative offset to the zero crossing in the waveform, as shown in the diagram below. This results in even more variation in the harmonic content. Slow modulation of the symmetry can sound like a phasing or chorus effect.
IMPORTANT NOTE: Symmetry modulation can create some interesting effects but it also has a side effect. When symmetry modulation is active you may sometimes hear low level clicks or low freqeuncy sound during silence or when FoldR has no input. This is because symmetry modulation is moving the zero crossing of waveform up and down which effectively turns DC into AC. Bear this in mind when applying Symmetry modulation.

Hints & Tips

The Input dial is your best friend! The Wave Folding effect is entirely dependant on the level of the input signal. Too much input signal and all you will hear is digital noise, too little and there will be no effect at all. The Input and Folds dials are used for attenuating or boosting the input signal.

Use the Input dial to set a a baseline for the Folds dials.There is an LED or flashing light underneath the Input dial, this comes on at the point where folding starts. You should adjust the input dial until you see it just start to flash at which point the baseline is set for the rest of FoldR’s controls.

The Factory Preset named "Init" provides an initial starting point to work from… 

Folds = zero, Symmetry = mid
Blend = mid  
Shape = zero ,  Smooth = zero
Gain = mid, Wet/Dry = zero
Folds Mod = zero  Symmetry Mod = zero 

With the dials set as described, turn up the Input dial until you hear the signal begin to distort or until you see the LED under the dial begin to flash. Now turn the dial down until the distortion stops or is negligible. Now you can use the Folds dial and modulation controls to set the amount of folding. Starting from this baseline as described helps to keep consistent when using presets. Normally after selecting a Preset, all you should need to do is adjust the Input dial.

User Interface Overview


Source Material

FoldR is great for adding spice to monophonic synth leads.

Long, slow, free running modulations are perfect for grungy ambient drones.

Rhythmic, tempo based modulations can turn drum loops into totally new entities! 


Credits

Implementation and design: Andy Bull. 
Gratitude and thanks to the indispensable input from all our excellent beta testers.
© 2017 Living Memory Software