PCMS Diff between A-B-C Samples

[JunoJohn]

Great explanation (as always) JunoJohn!!

Thanks!

There is no overlap between mappings B and C.

I probably should have answered the obvious question:

What's the point of all this?

By creating two different mappings, Roland has effectively turned one multisampled waveform into two.

And, why is that useful?

As Watermelon mentioned, you can create a stereo sound by panning Waveform B to one side and Waveform C to the other.

Creating a stereo sound would be a problem if you only had Waveform A with which to work.

You can also thicken a sound by layering and detuning Waveforms B and C. (This also helps to hide any obvious loop points.)

If you layer and detune two copies of just Waveform A, you would likely have issues with phase cancellation.

[JunoJohn]

Some of the PCM Waveforms in the SuperNatural Synth also use the A-B-C technique.

Unfortunately, they are labeled 1-2-3. That's the same way that Roland labels unrelated Waveforms, such as all of those "SynStrings" ones.

You might wish to listen to them to determine which is which.