[asterisk-users] application for voice modulation

[Albert]

Hi guys,

i am looking for application to modulate voice of speaker. This is
supposed to be FUN type of service, where user can call a premium number
and from IVR menu choose woman's or men's voice type and then call
friend to make him a joke :)

Is there such application in standard asterisk's applicartions ? And if
no maybe there is some add-on.

If you have an experience in that field and used such application let me
know pls.

Regards,
Albert