Of course, all "studies" need to be replicated, so I performed the same experiment with my XP-80, but listened through headphones via the XP-80's headphone jack. Of course, because of the low volume level of the "decay noise" (abbreviated "DN" from here on), I had the volume slider in its maximum position and had to elimate all other sources of noise in my house. I used Sony MDR-7506 phones for monitoring, by the way.

Basically, I picked a 4-tone piano patch off of the Session exp bd that I knew "had" the DN. I also assigned a sine wave(form) from the Vintage Synth exp bd (071) to the fourth tone, replacing the preset fourth tone selection. Then, I mapped the tones out on the keyboard as done by the primary researcher, stigf, and listened to how the DN responds in the various situations originally described. With the volume level of tone 4 set at 40, the DN was eliminated by pressing a "sine key" (sounding the sine waveform), but I could still hear the DN with tone 4 vol. level set at 20. I'll give more info in the next post; my computer has been booting me offline recently and I don't want to lose all I've typed...