Hi Alec, Thanks for your comments and enlightenment. From what you say, it would seem that I have the wrong end of the stick as far as the sound generation process is concerned. Am I right in assuming that when a sound is 'copied' to the editor, it is not the actual sample which is copied, just a pointer to the source location of the sample - say EW-04 or KN built-in sample ? This being the case, if the original source of an edited sound was within the EW-04 ROM and the card is removed, then the KN software presumably substitutes an address to a 'similar' sample, within the built-in samples - if it can find one or silence if it can't

When delving a bit deeper, I noticed that when the card was not present, as you mentioned above, some of the sounds, particularly effects type, did not play - Dynamic Bell, Small Bell, Oriental Hit, to mention a few. The Soprano Solo produced a strange effect. The delayed strong vibrato, which is normally present over the entire range of the voice, when the EW card is present, only appears on the top octave, when the card is removed and the 'copied' sound used.
So, after all this, it looks like the answer to Larry's original question is - in some cases a closely compatible sound may be chosen by the KN7000 but don't rely it
Something else which I tried : I copied an EW-04 sound ( Jazz Guitar Mute ) to Sound Memory and then stored this 'copied' sound into panel memory A1. I then stored the original EW-04 sound directly into panel memory A2. The EW-04 card was then removed and a comparison made between the sounds in A1 and A2. The sound in A1 was a close match to the original EW-04 sound but the sound in A2 now selected the KN7000 built-in Mute Guitar, which was quite different to the Jazz Guitar Mute. Presumably, the relative closeness of the sound in A1, to the original EW-04 Jazz Guitar Mute, can be attributed to the different filtering, envelope and editing parameters, copied over from the EW-04 sound, albeit that the prime sample must then be derived from the KN7000 built in sample.

On a slightly different subject : Having now listened to every sound on the EW-03 and EW-04 cards, I did notice that a few on the EW-04 have some rather nasty noise present on them - at least on my setup. It would be interesting to know if anyone else has noticed this. Some of the sounds in question are : in the Vocal group, M&F Choir Ooh, M&F Choir Aah, Heavenly Voices and in the Harp/String group, Softly Speaking. The noise seems particularly prominent around the G4 area of the keyboard. I am referring to the Original sounds, not 'copied' versions.

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Willum