Have you tried the HTK ?
http://htk.eng.cam.ac.uk/
Best Regards,
Yogi
To: s...
From: v...@hotmail.com
Date: Wed, 18 Feb 2009 13:59:47 -0500
Subject: [speech-recognition] HMM
I am also looking for a HMM implementation in C. Any luck with your
search for an Open Source?