Educational Resources in Speech, Hearing and Phonetic Sciences

Web Tutorials in Phonetics

  • Voicing Basics

    This tutorial introduces the basics of the concept of voicing for consonants.

  • Plosives (Basics)

    This tutorial introduces the basic facts about the articulation of plosives.

  • Plosives (VOT and aspiration)

    This tutorial on plosives deals with aspiration and voicing.

  • Online Intonation

    This tutorial provides practice in associating the sound of an intonation pattern with a commonly used system of notating intonation in English.

  • Phonetic Flash

    This group of exercises is intended for anyone who wishes to improve their knowledge of phonetic symbols.

  • Sound Machines

    Some of the sound machines below will only operate correctly with Internet Explorer (version 4 or later). Some also need the phonetic font Ipa-sams Uclphon1 SILSophiaL to be installed on your computer (click here to get this font and others). If you do not have this font, the phonetic transcriptions will appear as ordinary characters.

  • The Vowel Machine

    The Vowel Machine will help you to recognise English vowel sounds. You will see words in ordinary spelling or in phonetic transcription. Your task is to choose the word you hear.

  • Transcriber

    Transcriber is a program which presents words in sound or in spelling or both. Your task is to type in a phonetic transcription of the words.

  • TONI

    TONI is a program designed to help you recognise the nuclear tones of English.


    PLATO is a program where you have to find the nuclear syllable in sentences which you hear.

  • Vgrid

    Vgrid gives you practice at using the vowel quadrilateral.

Web Tutorials in Hearing

  • Loudness

    This tutorial provides an extensive introduction to our sensation of the loudness of sounds.

  • Pitch

    This tutorial provides an extensive introduction to our sensation of the Pitch of sounds.

Web Tutorials in Math

  • Logarithms

    This tutorial provides an elementary introduction to the mathematics of Logarithms. Logarithms are useful in many areas of speech and hearing science.

Absolute Beginners C++ Course Notes

The Absolute Beginners C++ course is an elementary introduction to programming using the language C++.

Absolute Beginners MATLAB Course Notes

The Absolute Beginners MATLAB course is an elementary introduction to programming using the MATLAB system.

Introduction to Digital Signal Processing Course Notes

This course, Introduction to Digital Signal Processing, introduces the fundamental concepts and algorithms of digital signal processing. The subject is approached through simple implementations of the algorithms in C++.

Introduction to SALT Web Tutorial

The Introduction to Speech Applications Language Tags tutorial demonstrates how to build spoken language dialogue applications on a Windows PC using the free Microsoft Speech add-in for Internet Explorer. The tutorial takes you through the SALT architecture and software installation then gives working demonstrations of the SALT language using speech synthesis and speech recognition.

Authoring your own Web Tutorials

You may be interested in trying out the WTUTOR system for building web tutorials. This allows you to deliver interactive teaching through the web using only word processing and other freely available software.

Some other pages on our site you may enjoy ...

KLAIR - a virtual infant for speech acquisition research

The KLAIR project aims to build and develop a computational platform to assist research into the acquisition of spoken language. KLAIR is a sensori-motor server that displays a virtual infant on screen that can see, hear and speak.

CochSim - Cochlear Simulation teaching tool

CochSim is a dynamic simulation of the time and frequency analysis performed by the ear. Sound signals such as sinewaves, pulse trains, sawtooth waves and vowels can be fed into an auditory filterbank and the output monitored in a moving animated display. The program shows the vibration of the oval window and the basilar membrane, the haircell activity against filter frequency and time, and an average excitation pattern across the cochlea.

ESECTION - Speech signal cross-sections

ESection is a free program for calculating and displaying spectral and other related analyses of sections of a speech signal. It can be used to demonstrate the different spectral properties of elements of speech. It can also calculate an LPC spectrum, autocorrelation and cepstrum analyses, and can display the signal as a waveform or as a spectrogram. It automatically finds formant and fundamental frequency values.

ESYNTH - Harmonic analysis/synthesis teaching tool

ESynth is a free 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.

RTGRAM - Real-time Spectrographic Display

RTGRAM is a free program for displaying a real-time scrolling speech spectrogram on Windows computers.

University College London - Gower Street - London - WC1E 6BT - Telephone: +44 (0)20 7679 2000 - Copyright © 1999-2013 UCL