Companding = compression/expansion. Completely different from emphasis/de-emphasis, and in turn separate from interpolation (which, as I have mentioned before, can vary greatly in its fidelity).EvilDragon wrote: Read about "companding" used on Rolands back in the day. Eric Persing has a say or two about that.
http://www.gearslutz.com/board/5446278-post128.html
Keywords here are "special sample interpolation/playback algorithm" and "emphasis/deemphasis".
Pretty easy to verify. I can't speak for the other machines, but I am quite certain that you'll find that the KRONOS is linear.EvilDragon wrote:And this (not companding per se) is exactly what's happening even today between Korg/Kurzweil/Yamaha/Roland, etc. They simply have different methods of doing the same thing. To me:
Korg - hyped up highs
Kurzweil - most neutral sounding
Yamaha - most sterile sounding
Roland - most compressed sounding (modern Roland doesn't hold a candle to vintage Roland, even in digital domain)
And yes, that was all with the same sample going into them.
There would be two tests, of course: one for un-interpolated playback (the system must be running at the same sample rate as the sample was recorded, and playback should be at the root pitch with no detuning), and another for interpolated playback (same as before, but transposed up by say, an octave and a tritone).
For the latter test, I am not aware of any current realtime system with better interpolation than the KRONOS, but I am aware of many which are noticeably worse.