SFS 4/Windows is a computing environment for PCs for conducting research into the nature of speech.It comprises software tools, file and data formats, subroutine libraries, graphics, standards and special programming languages. It performs standard operations such as acquisition, replay, display and labelling, spectrographic and formant analysis and fundamental frequency estimation. It comes with a large body of ready made tools for signal processing, synthesis and recognition, as well as support for your own software development.

Utilities

• SFSWin command program
• Create SFS file
• List SFS file
• Display/print SFS file
• Copy/link/remove items in SFS file
• Dump contents of SFS file
• Edit annotations
• Import and export data sets


Analysis programs

• Acquisition and replay
• Waveform processing
• Filtering
• Signal editing
• Spectrographic analysis
• Resampling and speed/pitch changing
• Laryngographic processing
• Fundamental frequency estimation (from SP or from LX)
• Formant frequency estimation & formant synthesis
• Filterbank analysis/synthesis
• Automatic annotation
• Spectral cross-sections
• Waveform envelope
• HTK Markov Modelling Toolkit 1.2


File formats

• Import from many different file formats (WAV, AU, AIFF, ILS, HTK, NIST, etc)
• Save multiple data items in SFS files and compare
• Standard formats for speech, Lx, Tx, Fx, annotations, synthesizer data, spectra, spectrograms, LPC coefficients, parameter tracks, etc
• Export to binary, text, WAV, ILS, HTK, ESPS, etc
• Processing history maintained in file.


Subroutine libraries

• Supports SFS file I/O and dynamic memory allocation for data sets
• Device-independent graphics
• Standardised format display of data types: waveforms, tracks, annotations, spectrograms, etc.
• Digital signal processing


Special purpose languages

• SML Speech Measurement Language - interpreted language for measuring data in SFS files
• SPC Speech Pascal - compiled language for waveform manipulation and analysis
• C-SPAN & K-SPAN - compiled languages for synthetic speech stimuli generation.


Copyright notice

• SFS is not public domain software, its intellectual property is owned by Mark Huckvale, University College London and others. However SFS may be used and copied without charge as long as the programs and documentation remain unmodified and continue to carry this copyright notice. Please contact the author for other licensing arrangements. SFS carries no warranty of any kind, you use it at your own risk.
• (c) 2001 Mark Huckvale University College London

Windows 95/98/NT4/2000

• Installation instructions and overview.
• SFS version 4.26 distribution. [self-extracting exe]
• Version history.