[PD] seeking help for -batch option

[patrick]

hi,

i am creating an acoustic model (in french). i would like to use 
puredata to double or even triple the amount of data (voice recording) 
by adding some modification to each soundfile (maybe changing the pitch 
of the voice, adding a bit of noise etc...).

in a directory i have multiple *.wav, how to have pd process each 
soundfile, apply an effect and save the result in a new file?

thanks!