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Wiki > Main > TWikiUsers > OzgurOzturk > TextToSpeech (r3)

Text to Speech (TTS) on Rockbox

Text to Speech (TTS) on Rockbox

This project is a part of Google Summer of Code. It is initiated by MarcoenHirschberg and taken on by OzgurOzturk.

We considered porting one of two open source TTS engines for Rockbox. One is eSpeak, a formant-based extremely light TTS engine producing less natural (robotic) sounding speech. Other is Flite, a port of Festival for mobile and embedded systems. It is a bit larger, around 2.5 MB, since it uses prerecorded diphones to synthesize the speech from text, but sounds much more human-like.

What is Planned Soon?

  1. Successful port of Flite as a plug-in with the ability to synthesize simple text files
  2. Including Flite to the core
    Making option available to make Flite read file and directory names and ID3 tags

Suggestions for Later? (Please add your suggestions)

  1. Adding filters for PDF HTML and other formats so that Flite can read them (maybe in collaboration with proposed DocumentViewer project)

The Problems

The voice files are included into the program as data structures, this requires large memory when compiling Flite and hence will cause the same for Rockbox when Flite is incorporated into the core. (We might decide to change this and have seperate voice files. TBD)


I have recently started working on the plug-in. Have successfully compiled Flite on my new set-up and my first (HelloWorld) plug-in.
r3 - 21 Jun 2007 - 13:59:37 - OzgurOzturk

Copyright by the contributing authors.