Can there be defined general guidelines or rules-of-thumb to the synthesis 
of already known sounds?
If I have a wav file of the sound I want to reach, I can use a HETRO/adsyn 
combination to recreate it in the context of a csound instr, but its sort of 
like cheating, if you know what I mean. Cant those utilities be used to 
retrieve info from the soundwave itself, that would allow us to recreate it 
using just sound generation/shaping opcodes?

As a little parentesis, what really is the use of PVANAL/pvoc? Sure I get 
interesting sounds from it, but I have no control over results...

pedro