With Filestar you get 80 different skills for working productively with Portable Voice Format .(pvf) files.
About .Pvf
Name
Portable Voice Format
Extension
.pvf
Format
Binary
Category
Audio
Developer
Marc Schaefer
Description
A PVF file is an audio file saved in the portable voice format (PVF). It contains human speech, most likely recorded from a phone call using Mgetty-voice, also known as Vgetty, which is a software package used to create an answering machine on a Unix computer using a voice modem.