Hello folks,

http://csounds.com/manual/html/transeg.html and
http://csounds.com/manual/html/GEN16.html say;

If itype > 0, there is a slowly rising, fast decaying (convex) curve, 
while if itype < 0, the curve is fast rising, slowly decaying (concave).

Although I am niether a native English speaker nor a mathematician but 
from a point of view which is an ordinary ADSR, I feel this one is 
rather appropriate;

If itype > 0, there is a slowly rising (concave) or slowly decaying 
(convex) curve, while if itype < 0, the curve is fast rising (convex) or 
fast decaying (concave).

How do you think?

Kanata Motohashi
http://www3.to/sar/