Combilex RP is a high-quality pronunciation lexicon for the British Received Pronunciation accent of English.

The lexicon contains c.145,000 entries, including the 20,000 most frequent words and contains a variety of linguistic information alongside detailed pronunciations.

Combilex RP is an ASCII text file, one entry-per-line, which is easily adaptable for use in text-to-speech synthesis (voice-building or run-time synthesis) and in speech recognition systems.

Full manually notated orthographic-phonemic correspondences are included, allowing derivation of accurate grapheme-to-phoneme rules.

The University of Edinburgh is seeking interest from commercial organisations to license this technology on a non-exclusive basis for internal product development purposes within all identified applications for speech synthesis.