The Department of Phonetics & Linguistics of University College London has excellent resources for phonetics including interactive exercises and games, web tutorials and pronunciation tips.

Naturally not all these resources are suitable to learners of English. This page is intended as a guide to those which are.

UCL is also host to the Speech Internet Dictionary.

Browser
UCL says that not all the exercises work correctly without Internet Explorer 4 or later. Presumably they will also work with other 4+ browsers.

All the exercises and tutorials use Javascript. You need to have this enabled. Despite their name, these exercises do not use Flash.

Sound [ S ]
Some exercises require you to hear sound. Apart from a suitable sound card and speakers or headphones, you may need a browser plug-in or to enable Javascript. For any problems consult UCL's help page.

Phonetic fonts [ P ]
Many exercises a phonetic font (different to Lucida Sans Unicode used here). You can download these free here. Note that at least two different fonts are used so be sure to install the entire package.

The first thing you need to do in phonetics is learn the International Phonetic Alphabet. Language learners only need to learn those symbols which correspond to English RP (Received Pronunciation).

English RP Vowels: identify the symbol for the vowel sound in a series of written words.

Hit & Miss: identify which written words contain a particular sound, through its symbol.

The Vowel machine [ P ] / [ S ]: listen to a word and choose between 3 spellings, which can be phonetic or standard.

Transcriber [ P ] / [ S ]: write the phonetic transcription of a word given either as text or sound or both. Consult help to learn how to write phonetic script in the box.

Phonetics goes a long way beyond the sounds of letters and words. These two exercises look at sentence pronunciation.

Online Intonation [ P ]: test your ability to hear differences in intonation in six versions of the same sentence. Note: this exercise is more technical than the others and requires you to know (or guess) the symbols used to transcribe intonation; it is, however, useful or simply interesting for non-specialists.

Plato [ S ]: identify the tonic (the major stress in a sentence).

These tips [ P ] are mini-lessons in English pronunciation. Almost all are accessible and suitable to students of English who know the IPA symbols. Some require sound too. Highly recommended.

Note: the complete index, together with the various themes of the tips, can be found by clicking on categories. Both links and new take you to exercises and other content.

These tutorials deal with speech production from a physiological point of view. Although this might seem over-technical for a language learner, many of the concepts are useful, for example, knowing the difference between voiced and voiceless consonants helps students pronounce verb endings correctly.

Voicing Basics [ S ]: learn the difference between voiced and voiceless and periodic and aperiodic.

Plosives (basics) [ S ]: plosives are consonants made by block and release (like / p /). Learn how and where this happens.

Plosives (VOT and aspiration) [ S ]: learn about voiced and aspirated plosives,and voice onset time.