david ds wrote:
> 
> There is still one thing i miss in Csound :  a simple efficient
> pitchbender/transposer like :
> 
> ar pitchchange amp,kpitch
> 
> where kpitch is k-rate pitch control signal

Unless I'm misunderstanding the suggestion, Csound can already do this. For
pitchbend across time, think of pitch variation as a very slow form of FM, and
patch a k-rate very LFO  ( I use half a period ) to the frequ of the a-rate signal.
For transposition, just add a constant to the frequ.