Software

SFS - Speech Filing System Tools for Speech Research
The Speech Filing System (SFS) is a software suite running on Windows and Unix systems for the storage and analysis of speech data. It provides a comprehensive environment for speech signal processing, synthesis and recognition.

ESYNTH - Harmonic analysis/synthesis teaching tool
ESynth is a program designed to explain the harmonic analysis and synthesis of signals. With ESynth you can create signals by adding together individual sinusoidal waveforms (sinewaves) and study the resulting waveform and spectrum. You can also perform an analysis of an input waveform, to see how a given sound can be represented in terms of a sum of sinewaves.

ESYSTEM - Signals and Systems teaching tool
ESYSTEM is a program for experimenting with signals and systems. With ESYSTEM you can see the effect of simple systems on a range of simple signals. You can generate simple signals such as sinewaves, pulses, pulse trains, sawtooth and noise; you can pass them though systems such as an amplifier, a resonator, a low-pass, high-pass or band-pass filter, or a vocal tract model. You can observe the effect on the input and output waveforms and the input and output spectra. Now includes extensive tutorial!

HEARLOSS - Hearing Impairment Demonstrator
HearLoss is an interactive Windows PC program for demonstrating to normally hearing people the effects of hearing loss. With HearLoss you can replay speech, music and noise under a variety of loudness, filtering and masking conditions typical of hearing impairments. Best of all you can interactively change the settings and demonstrate their consequences.

RTSPECT - Real-time Waveform and Spectrum Display
RTSPECT is a program for displaying a real time waveform and spectrum display of an audio signal on Windows computers. With RTSPECT you can monitor the waveform and spectral shape of sounds being played into the computer's microphone or line input ports. RTSPECT can display one or two-channel audio signals.

RTGRAM - Real-time Spectrographic Display
RTGRAM is a program for displaying a real time scrolling speech spectrogram on Windows computers. RTGRAM is optimised for speech signals and has options for different sampling rates, analysis bandwidths, temporal resolution and colour maps.

VOISCRIPT - Scripted Audio Playback System
VoiScript is a program to synchronise display of a script with replay of an audio recording. VoiScript allows you to move around a scripted recording simply by clicking on the script. Since VoiScript also allows you to record your own voice, it is useful in many educational situations. VoiScript comes with instructions about how to author your own audio applications.

WASP - Waveforms Annotations Spectrograms and Pitch
WASP is a program for the recording, display and analysis of speech on personal computers. With WASP you can record and replay speech signals, save them and reload them from disk, edit annotations, and display spectrograms and a fundamental frequency track.

BROWSE - Simple tool for browsing audio files
BROWSE is a program for browsing audio recordings. With BROWSE you can drag and drop audio files in a range of formats onto the display to see and hear their contents. BROWSE allows you to zoom, scroll and save the audio files to other formats.

WTUTOR - Web tutorial authoring system
WTUTOR is a system for the authoring and delivery of interactive teaching and learning that we use for our own Web tutorials. WTutor allows you to create tutorials containing multimedia and quiz questions using standard word-processing software in combination with freely available tools. No additional software is required at the student end.

Enhance - Speech Signal Enhancement
UCL Enhance is a program for the enhancement of the intelligibility of speech recordings. The program incorporates a number of standard techniques for manipulating the overall amplitude of the signal and for the removal of steady-state additive noise. However, the program is unusual in its ability to detect and enhance selective regions of the speech signal based on their phonetic properties.

ProSynth Project Deliverables
ProSynth was a research project looking at "all-Prosodic" speech synthesis. A number of data and software deliverables are available.

FIX - Feature Information Xfer
FIX (Feature Information Xfer) is a set of programs designed to facilitate analysis of confusion matrices by both ordinary and sequential information transfer analysis (SINFA - Wang & Bilger, 1973, JASA, 54[5] 1248-1266). The programs may be menu-driven, or run as stand-alone modules. These executables run under MS-DOS on an IBM PC or clone. The programs have also been used under UNIX on a MASSCOMP 5/6000 series computer. Source code may be made available for users with special needs. The software is available via anonymous FTP free of charge but with copyright retained by UCL.

SCORE - Score categorization experiments
SCORE is a general purpose program for the analysis of categorization/identification experiments. Its output can be used directly as input to FIX in the appropriate circumstances. Also available are TALLY and PRCNTIZE which work with SCORE. TALLY allows multiple response matrices to be summed together whereas PRCNTIZE concerts matrices from numbers of observations to percentages. These executables run under MS-DOS on an IBM PC or clone. They are written in ANSI C and source code may be made available for users with special needs. The software is available via anonymous FTP free of charge but with copyright retained by UCL.

POLYFIT - Polynomial Fitting of auditory filter shapes
POLYFIT is a program for the fitting of roex filter shapes to thresholds measured in notched noise, especially as a function of level. This software implements the procedures described in a series of publications, most recently: Rosen, S., Baker, R. J., & Darling, A. M. (1998) "Auditory filter nonlinearity at 2 kHz in normal hearing listeners," J. Acoust. Soc. Am. 103, 2539-2550. These executables run under MS-DOS on an IBM PC or clone. They are written in ANSI C and source code may be made available for users with special needs. The software is available via anonymous FTP free of charge but with copyright retained by UCL.