Korg Forums

So, I've had my TR for probably 2 or 3 years now, so naturally I know the instrument quite well. But. I need to make a Jens Johannson lead, which one component of it is a pulse waveform, which I know IS available on the TR...but as far as I have seen so far, there is no place to adjust the length of the positive/negative sections of the waveform cycle?

Please let me know how to do PWM on the TR.

You can't.

The TR is a sample-based synth workstation, not a VA synthesizer. This means it relies on recordings of waveforms, rather than generating them 'out of thin air'. There are samples of a number of different pulse widths (measured in percentage I believe), and there is also one or two fixed PWM cycle samples you'll find under 'Detuned - PWM' or something like that.

This is just one of the disadvantages of sampling over pure synthesis.

Oh man, after all my time spent on the TR, I did not know this. I obviously knew the TR used samples for sounds of acoustic instruments, etc, but I figured it still generated the most basic waveforms itself. This is a bit of a bugger that there is no dynamic PWM. Oh well, I want I think about a 67% positive cycle and 33% negative (or maybe it's the other way around?), I'll see if there's a sample with something close to this.

Sadly, it's true of nearly every workstation: they're samplers with some synthesis-like properties, not synthesizers. The M3 can be expanded with the Radias expansion, the Triton line (except the LE) could take the EXB-MOSS expansion, and the OASYS is such as superpower that it has more than one synth engine running inside it. Not sure about other manufacturers' keyboards, but typically, you buy a workstation and compliment it with the synth(s) of your choice.