The Penn Phonetics Lab Forced Aligner is an automatic phonetic alignment toolkit based on HTK.
The current release (ver. 1.003, July 2009) contains the acoustic models of American English, a Python script that can be used to do forced alignment, as well as a readme file and some examples. You can download the toolkit from the following link:
Download The Penn Phonetics Lab Forced Aligner
You can also try the forced aligner online processing system:
The PPL Forced Aligner Online Processing System
Please send your comments and questions to
P2FA can be cited as: Jiahong Yuan and Mark Liberman. 2008. Speaker identification on the SCOTUS corpus. Proceedings of Acoustics '08.