Download of PVCX 0.9 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Audio & Video Tools, more precisely Editors & Converters.
This software for Mac OS X is an intellectual property of Waveform Software. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
PVCX is a wrapper for Paul Koonce's powerful PVC phase vocoder package. Currently, it's being made available as a public beta with the hope that it'll generate feedback, bug reports, suggestions, and additions to its help pages. There are plenty of rough edges to be smoothed.
You may want to check out more software for Mac, such as MFilter, Aiseesoft WMV Converter for Mac or AkBrowser, which might be related to PVCX.