noyau wrote:
I can modify an existing patch but impossible for me to create one, or to say : "I want this sound" and to have it...
How did you begin and with which material ?
Regards

Learn how each module interconnects and what its functions are first,if you go in and say "right i'm gonna do this sound or that sound" you'll fall flat,it is possible to learn from existing patches, and see how everything interacts.I learnt mainly from reading about all types of synthesis and the limitations and comparisions between them all,i dont program all my own patches but try to make most of them,I do use presets when needed,but its likes making a cake and following a recipe book all the time.unless you know how the ingredients act together you'll never learn to make your own recipe and your cake will taste the same as everyone elses
I think nowdays with software such as the ARP2600/Minimoogs etc it gives you such a great education into learning (especially the ARP) the arp gives you every signal path labelled so its easy to see how they interact
Most of the time when i want to replicate a sound(Jarre types)i listen to the sound and try to pick out its fundementals and decide what type of oscillator waveforms they would use,sawtooth ans square waves types sounds are easy to identify...
You can then gauge how to go about duplicating that sound,its then a matter of experimenting with the Filters settings etc
Your far better learning on a VA/Subtractive analog than on ROMplers although they tend to use the same type of Wave(PCM)LFO/Filter/Amp/Effects routing,but real waveforms (saw/Square/Pulse etc) are better for learning rather than real sampled sounds
there are lots of resources on the net so theres no excuse not to learn,when i was growing up learning i never had the luxury of the net and so had to read about things or get in and learn the manuals and synthesis basics,but it did pay off..
heres a site with some useful info
http://arts.ucsc.edu/ems/music/equipmen ... synth.html