Festival is a free voice that sounds like a machine. Cepstral is a fee based "human" voice ($30 USD per voice per CPU). They are similar in that they both produce mechanically timed output. IMO, you should use festival if this isn't a customer based interface. If it is a CBI, use cepstral and if you don't like it, recreate the wav files it plays (The English language is only based on about 1700 sounds). Cepstral is your choice if your IVR is going to be "asterisk interlaced" since all asterisk voices are "Cepstral Allison" out of the can.
_____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Eric Fort Sent: Tuesday, December 02, 2008 2:53 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: [asterisk-users] cepstral vs festival I'm about to begin working on an ivr project to do database backed scheduling. I would like to use text to speech in some places. What are the differences in using festival vs. Cepstral? How are they similar, how are they different? Is one really better than the other? How and Why? Thanks, Eric
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