Editing FreeTTS (section)

{{Short description|Open source speech synthesis system}}
{{more footnotes|date=May 2016}}
{{Infobox software
| name                       = FreeTTS
| logo                       =
| screenshot                 =
| caption                    =
| collapsible                =
| author                     = lamere<br/>ppk96<br/>schnelle<br/>wwalker
| developer                  =
| released                   = {{Start date and age|2001|12|14}}
| latest release version     = 1.2.2
| latest release date        = {{Start date and age|2009|03|09}}
| latest preview version     =
| latest preview date        =
| programming language       = [[Java (programming language)|Java]]
| operating system           =
| platform                   = [[Java (software platform)|Java]]
| size                       = 12.8 MB
| language                   = English
| genre                      = [[Speech synthesis]]
| license                    = [[BSD licenses|BSD]]
| website                    = {{URL|freetts.sourceforge.net}}
}}
'''FreeTTS''' is an open source [[speech synthesis]] system written entirely in the [[Java (programming language)|Java programming language]]. It is based upon [[Festival Speech Synthesis System|Flite]]. FreeTTS is an implementation of [[Sun Microsystems|Sun]]'s [[Java Speech API]].

FreeTTS supports end-of-speech markers. [[Gnopernicus]] uses these in a number of places: to know when text should and should not be interrupted, to better concatenate speech, and to sequence speech in different voices. Benchmarks conducted by [[Sun Microsystems|Sun]] in 2002 on [[Solaris (operating system)|Solaris]] showed that FreeTTS ran two to three times faster than Flite at the time.<ref>{{cite web
 |url         = http://research.sun.com/techrep/2002/smli_tr-2002-114.pdf
 |title       = FreeTTS - A Performance Case Study
 |author1     = Willie Walker
 |author2     = Paul Lamere
 |author3     = Philip Kwok
 |date        = August 2002
 |publisher   = [[Sun Microsystems]]
 |quote       = ''Through using some straightforward optimizations and relying on the aggressive optimizations performed by the Java HotSpot compiler, we were pleased to find that FreeTTS runs two to four times faster than its native-C counterpart, Flite. Clearly, it would be possible for us to roll some of these optimizations back into Flite with the likely result of improving Flite's performance to levels similar to FreeTTS. The lack of Java platform features such as garbage collection and high-performance collection utilities, however, makes performing these optimizations in Flite much more time consuming from a programming point of view.''
 |access-date  = 2009-07-25
 |url-status     = dead
 |archive-url  = https://web.archive.org/web/20090325195557/http://research.sun.com/techrep/2002/smli_tr-2002-114.pdf
 |archive-date = 2009-03-25
}}</ref>