What i want to achieve is that lower notes sound louder than higher notes. I guess this is what keyboard scaling does and how is it implemented (linear or logaritmic or ...)?

Thx,

Domien

http://www.google.com/search?q=keyboard+scaling

ha ha

i guess it would be linear if you use midi notes, but you'd go logarithmic if you want to use frequencies.

Thanx hardoff, that was an interesting way to search

I don't really understand however why their would be a difference between notenumber vs frequency (A4=440, A5=880)?

I've made something up quickly. I haven't tried it yet on actual synths but i post it anyway. If you want to use it just copy slider + table + subpatch.

http://www.pdpatchrepo.info/hurleur/kbScale.pd

A4 = midi number 69

A5 = midi number 81

the ratio 69/81 is quite different to 440/880

anyway, just had a look at that patch. i don't think it's exactly what you want. a simple line from 1 at midi note 0....to (n) at midi note 127 should be fine.

where (n) is a number between 0 and 1

Ok, I'll give things a try. I understand that there's a difference between those ratios, but not exactly how either of them relate to perceived loudness.