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KTTS -- KDE Text-to-Speech -- is a subsystem within the KDE desktop
for conversion of text to audible speech. KTTS is currently under
development and aims to become the standard subsystem for all KDE
applications to provide speech output. Currently, KTTS consists of
the following components:
KTTSD
The KDE Text-to-Speech Deamon, a non-gui application that runs in
the background, providing TTS support to KDE applications. Applications
initiate TTS by making DCOP calls to kttsd.
KTTSMGR
An application for configuring the KTTS System and for managing in-progress
speech jobs. kttsmgr provides an icon in the system tray for performing
these functions as needed.
kttsjobmgr
A KPart for managing in-progress speech jobs.
kcmkttsd
A KControl module for configuring the KTTS System. kcmkttsd runs in the
KDE Control Center or start it with the command "kcmshell kcmkttsd".
ktexteditor_kttsd
A plugin for the KDE Advanced Text Editor that permits you to speak an entire
text file or any portion of a file.
khmtl-plugin
A plugin for Konqueror that permits you to speak all or any portion of an
HTML web page. (Note: this component is in kdebase/konqueror/kttsplugin)
Original Author: José Pablo Ezequiel "Pupeno" Fernández <pupeno@kde.org>
Current Maintainer: Gary Cramblitt <garycramblitt@comcast.net>
Contributors:
Olaf Schmidt <ojschmidt@kde.org>
Gunnar Schmi Dt <gunnar@schmi-dt.de>
Paul Giannaros <ceruleanblaze@gmail.com>
Jorge Luis Arzola <arzolacub@hotmail.com>
David Powell <achiestdragon@gmail.com>
User features:
* Speak contents of a text file.
* Speak KDE notification events (KNotify).
* Speak all or part of the text of a web page in Konqueror.
* Speak all or part of the text in Kate text editor, including
instances where Kate is embedded in another KDE application.
* Long text is parsed into sentences. User may backup by sentence
or paragraph, replay, pause, and stop playing.
* Filter plugins for converting chat emoticons to speakable words,
fix mispronunciations, and convert xhtml to SSML.
* Audio output via aRts, ALSA, GStreamer (version 0.8.7 or later),
or aKode.
Programmer features:
* Priority system for screen reader outputs, warnings and messages,
while still playing regular texts.
* Plugin-based architecture for support of a wide variety of speech
synthesis engines and drivers.
* Permit generation of speech from the command line (or via shell scripts)
using the KDE DCOP utilities.
* Provide a lightweight and easily usable interface for applications
to generate speech output.
* Applications need not be concerned about contention over the speech device.
* FUTURE: Provide support for speech markup languages, such as VoiceXML, Sable,
Java Speech Markup Language (JSML), and Speech Markup Meta-language (SMML).
* FUTURE: Provide limited support for embedded speech markers.
* Asynchronous to prevent system blocking.
Requirements
------------
KDE 3.2 or greater and a speech synthesis engine, such as Festival. Festival
can be obtained from http://www.cstr.ed.ac.uk/projects/festival/. Festival
is distributed with most Linux distros. Check your distro CDs. Also works
with Hadifix, Epos, Festival Lite (flite), FreeTTS, or any command that can
speak text.
Optional Components
-------------------
* The sox utility is needed for adjusting overall speech rate.
* The xsltproc utility is needed for SSML support.
* GStreamer 0.8.7 or greater.
See the KTTS Handbook
(http://accessibility.kde.org/developer/kttsd/handbook/index.html)
for complete instructions on installing, compiling, configuring, and using
KTTS.
Audio Plugins
-------------
KTTS can be built with the following audio plugins. The "Default Configure
"Option" column shows the default option for the configure command.
The "Alternate" column gives the opposite configure option:
System Plugin Default Configure Option Alternate
------ ------------ ------------------------- ------------------------
aRts artsplayer --with-arts --without-arts
ALSA alsaplayer --with-alsa=check --with-alsa=no
GStreamer gstplayer --with-gstreamer=no --with-gstreamer=check
aKode akodeplayer --with-akode=no --with-akode=check
You *must* have at least one of these plugins for KTTS to work.
The aKode and GStreamer players are not built by default because they have issues
with instant stopping and starting.
Packager Notes
--------------
The following speech synthesizer plugins are all built by default.
Some of them are runtime only dependent upon non-free software.
(Non-free according to Debian Policy). The "Configure Option to
not build" column shows the configure command to not build the plugin:
Synth License Configure Option to not build
------------- -------- -----------------------------
Festival free --disable-kttsd-festivalint
Festival Lite free --disable-kttsd-flite
Epos free --disable-kttsd-epos
Command free --disable-kttsd-command
Hadifix non-free --disable-kttsd-hadifix
FreeTTS non-free --disable-kttsd-freetts
IMPORTANT NOTE TO BINARY PACKAGERS:
Please do not distribute binary packages of kdeaccessibility with the
gstreamer plugin, as this creates unwanted dependencies. Instead,
distribute the gstreamer plugin in a separate package, e.g.
kde-accessibility-extras. The separate package should require
gstreamer >= 0.8.7. Thank you.
Support
-------
The KTTS website is
http://accessibility.kde.org/developer/kttsd
In addition to the KDE Bugzilla database (bugs.kde.org), discussions for KTTSD
currently take place in the kde-accessibility mailing list. Subscribe at
https://mail.kde.org/mailman/listinfo/kde-accessibility. Developers
also hang out in IRC (irc.kde.org channel #kde-accessibility).
Directories
-----------
libktts Library for applications desiring to speak text. This must be built first.
libkttsd Library for KTTSD. Defines the interface for plugins for KTTSD. Must be built second.
players Audio plugins for KTTSD.
artsplayer aRts audio plugin for KTTSD.
gstplayer GStreamer audio plugin for KTTSD.
alsaplayer ALSA audio plugin for KTTSD.
akodeplayer aKode audio plugin for KTTSD.
plugins Plugins for KTTSD. You must have at least one plugin to use KTTSD.
festivalint Plugin for Festival using Festival Interactive mode (festival --interactive).
flite Plugin for Festival Lite.
hadifix Plugin for Hadifix.
freetts Plugin for FreeTTS.
epos Plugin for Epos.
command Generic command plugin.
kttsd KTTSD itself. Non-interactive deamon.
icons Icon for kttsmgr and KTTSD.
kttsjobmgr A KPart used by kcmkttsmgr for managing text jobs in KTTSD.
kcmkttsmgr A KControl module for managing KTTSD. Run using "kcmshell kcmkttsd".
kttsmgr Application for managing KTTSD. Wrapper for kcmkttsmgr plus a system tray icon.
app-plugins Plugins for other applications to speak text.
kate Embedded Kate plugin.
compat Copy of kdelibs/interfaces/kspeech. Used when compiling for KDE less than 3.4.
debian Debian packaging files. (possibly way out of date)
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