- Agora Language Marketplace
- AVAAZ (CSRE, etc.)
- CSpeech developer, Paul Milenkovic (homepage)
- Entropic Research Lab (esps, waves+). Purchased by Microsoft on 29 October 1999.
- KayPENTAX (formerly, Kay Elemetrics; hardware/software include CSL, Multi-Speech, Real-Time Pitch, Visi-Pitch, etc.)
- Scicon Research & Development (PCquirer (X16), Macquirer (X16), PitchWorks (for PCs and Macs; can read/import Entropic's xwave files, labelling and tier structure), SynthWorks, SpeechCoach, etc.)
- Sensimetrics Corporation (SpeechStation2, HLsyn, SenSyn, Speech Production and Perception 1 (multimedia course on CD-ROM))
- EMU Speech Database System. EMU is a collection of freely-downloadable software tools from Macquarie University for the creation, manipulation and analysis of speech databases in Windows (Win95/98/NT), Mac, and Unix platforms (incl. Linux (e.g., RedHat 6.2)); includes a search engine for querying the databases and an interactive labeller that can display waveforms, spectrograms, pitch tracks, etc.; allows for the creation of hierarchical as well as sequential labels for speech utterances. Emu is currently being used for ToBI (Tones and Break Indices) style prosodic annotations for English and other languages, including Chinese (Mandarin, Cantonese, and Taiwanese). While there does not appear to be any online, illustrated tutorials for Emu, the following Macquarie University websites are informative: one has instructions on installing Emu: Acoustics of Speech Software Setup, part of Mcquarie University's course, SLP801: Fundamentals of Speech Science. The other website is Steve Cassidy's SLP801: Fundamentals of Speech Science Acoustics Module, an online tutorial that makes use of the suite of programs in Emu.
- ProRec 1.01 Speech Prompt & Record System. ProRec is a Windows program developed by Mark Huckvale (University College London) for field workers in Phonetics, Linguistics and Speech Science. It allows researchers to set up a laptop as a portable recording system complete with visual prompts for speakers.
- SFS Speech Filing System. SFS is a set of computer tools for speeech research, and performs standard operations such as acquisition, replay, display and labelling, spectrographic and formant analysis and fundamental frequency estimation. It runs under Unix, DOS and WIN32 environments and is currently running on Sun, Hewlett-Packard, Masscomp, Alpha, Linux and 486+PC. SFS is copyrighted University College London, but is currently supplied free of charge to research establishments for non-profit use.
- SIL: Linguistics Computing Resources on the Internet. SIL's links to linguistics software, including their own freely-downloadable SIL Computing resources, such as their Encore IPA fonts, and other linguistics-related freeware. See also SIL Acoustic Software: Speech Analysis Tools, SIL's freely-downloadable, speech-related resources, including their Speech Analyzer for Windows, and other speech analysis software for different platforms: the CECIL series -- CECIL (for DOS), WinCECIL (for Windows), and MacCECIL (for Macs). The Speech Analyzer for Windows uses .wav files instead of (Win)CECIL's .utt files. The speech analysis software is produced by JAARS.
- Snack: The Snack Sound Extension for Tcl/Tk. Snack is cross-platform (Win/Mac/Unix/etc.) freeware developed by Kare Sjölander that is "an extension to the Tcl/Tk scripting language [open source--mc]. It makes possible the creation of powerful multi-platform audio applications. Snack adds commands for basic sound handling, e.g. sound card and disk I/O. Snack also has primitives for sound visualization, e.g. waveforms and spectrograms. It was developed mainly to handle digital recordings of speech, but is just as useful for general audio." (See, for example, WaveSurfer, a sound application built using Snack.)
- Transcriber. Freeware for transcribing and annotating digital audio, aimed initially at transcription of broadcast news data. It was developed under Unix by Claude Barras and Edouard Geoffrois, at DGA in Paris, and compiled at LDC on Windows NT. The program handles files in .wav, .au, .snd, .aiff, .smp and .sph formats, as well as headerless (raw) files -- it guesses byte order, 8 vs. 16 bit sampling, etc., and you can tell it the sampling rate and number of channels (currently only 1, 2 and 4 are supported). The program runs in Windows, Mac, Linux, and Unix systems.
- WaveSurfer. A sound application built using Snack (see above), WaveSurfer is a toolkit for speech research, teaching, etc., developed by Kare Sjölander and Jonas Beskow, the software records, plays, edits, views, prints, and labels audio data. It can display waveforms, pitch tracks, wideband spectrograms, time axis, and a "pane" (or tier) for labelling/transcription, as well as multiple displays of those as needed). It is a multi-platform program, with versions for Windows, Linux, Macintosh, Sun Solaris, HP-UX, and SGI IRIX.
- UCSB Linguistis: Resources. Freely downloadable Windows-based tools for the transcription of spoken discourse, including: VoiceWalker, a transcription tool for audio and video, compatible with Windows AVI files and Quicktime MOV files (the older software was SoundWalker for audio files only); and SoundWriter, which incorporates the features of SoundWalker as well as the ability to align transcripts with sound files; tools developed at theUCSB Linguistics Computing Lab, U. of California Santa Barbara, California.
More Freeware/Shareware Links:
Freeware: Audacity is a free, non-expiring, cross-platform (Windows 98 and higher, Mac OS 9/X, Linux/Unix) sound editor.
Shareware: Shareware for opening, recording (including directly from CD's), and saving in multiple formats, and waveform-editting on multiple platforms: For a sound editor for Windows only, see Chris Craig's GoldWave (incl. spectrographic display options), and Ponnuchamy Varatharaj's FlexiMusic Wave Editor (converts between .wav and .mp3 (as well as .snd, .voc, etc.)). Syntrillium's Cool Edit (incl. saving to RealAudio format) is no longer available, as the company's technology assets were purchased by Adobe Systems Incorporated in May 2003. (The professional version of Cool Edit (Cool Edit Pro 2.1) was "rebranded" and released in August 2003 as Adobe Audition.
Also check out TUCOWS' links to downloadable sound editors and other audio applications for Macs, Unixes, Windows, etc., as well as Pure Mac: Audio (part of Pure Mac's website for freeware/shareware), the comp.speech WWW Site, and this web page's Web Tools and Software for other FTP and web sites for downloadable, archived freeware/shareware.