Wavetable Synthesis Simplified

I developed a presentation as part of my Sprockit workshop. I think it’s a pretty clear presentation of wavetable synthesis and that it clearly shows how aliasing happens and how to avoid it. I’ve often found that it is difficult to find this type of clear and simple explanation of fundamental synthesis concepts that is particularly useful for the DIY Synth community. So, click through for some learning…

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Rockit Version 1.11

Some of you enterprising Rockit users came across some bugs in the the 1.1 code. I listened and have now fixed them. There was a bug in the pitch bend code that caused some screwy behaviour. I also made some more improvements to the filter envelope behavior. I think I’ve found the perfect filter envelope speeds. At the same time, I found a better value for a couple more resistors. R75 and R76 are going to be 18k from here on. This reduces the maximum filter resonance but it kind of had to come down a little since the level going into the filter from the VCA had been increased. It’s not 100% necessary, but I think it makes a worthwhile improvement. You can download the new code here.