eSpeak NG

The eSpeak NG is a compact open source software text-to-speech synthesizer for Linux, Windows, Android and other operating systems. It supports more than 100 languages and accents. It is based on the eSpeak engine created by Jonathan Duddington. A command line program (Linux and Windows) to speak text from a file or from stdin. A shared library version for use by other programs. (On Windows this is a DLL). A SAPI5 version for Windows, so it can be used with screen-readers and other programs that support the Windows SAPI5 interface. eSpeak NG has been ported to other platforms, including Solaris and Mac OSX. Includes different Voices, whose characteristics can be altered. Can produce speech output as a WAV file. SSML (Speech Synthesis Markup Language) is supported (not complete), and also HTML. Compact size. The program and its data, including many languages, totals about few Mbytes. Can be used as a front-end to MBROLA diphone voices. eSpeak NG converts text to phonemes with pitch and length information. Can translate text into phoneme codes, so it could be adapted as a front end for another speech synthesis engine. Potential for other languages. Several are included in varying stages of progress. Help from native speakers for these or other languages is welcome. Written in C. See the ChangeLog for a description of the changes in the various releases and with the eSpeak NG project. The espeak-ng binaries use the same command-line options as espeak , with several additions to provide new functionality from espeak-ng such as specifying the output audio device name to use. The build creates symlinks of espeak to espeak-ng , and speak to speak-ng . The espeak speak lib.h include file is located in espeak-ng/speak lib.h with an optional symlink in espeak/speak lib.h . This file contains the espeak 1.48.15 API, with a change to the ESPEAK API macro to fix building on Windows and some minor changes to the documentation comments. This C API is API and ABI compatible with espeak. The espeak-data data has been moved to espeak-ng-data to avoid conflicts with espeak. There have been various changes to the voice, dictionary and phoneme files that make them incompatible with espeak. The espeak-ng project does not include the espeakedit program. It has moved the logic to build the dictionary, phoneme and intonation binary files into the libespeak-ng.so file that is accessible from the espeak-ng command line and C API. The program was originally known as speak and originally written for Acorn/RISC OS computers starting in 1995 by Jonathan Duddington. This was enhanced and re-written in 2007 as eSpeak , including a relaxation of the original memory and processing power constraints, and with support for additional languages. The historical branch contains the available older releases of the original eSpeak that are not contained in the subversion repository. These early releases have been checked into the historical branch, with the 1.24.02 release as the last entry. This makes it possible to use the replace functionality of git to see the earlier history: NOTE: The source releases contain the big endian , espeak-edit , praat-mod , riskos , windows dll and windows sapi folders. These do not appear in the source repository until later releases, so have been excluded from the historical commits to align them better with the 1.24.02 source commit. The getopt.c compatibility implementation for getopt support on Windows is taken from the NetBSD getopt long implementation, which is licensed under a 2-clause BSD license.