Technical GlossarySpeech, Voice and Audio AI

Pronunciation Lexicon

A resource that maps written words to phonetic forms and builds an acoustic-linguistic bridge in hybrid speech recognition systems.

A pronunciation lexicon serves as a critical bridge between text and speech in hybrid ASR systems. It becomes even more important in languages where spelling and pronunciation diverge significantly. Correct pronunciation mappings for proper names, brand names, and domain-specific terminology can strongly affect recognition quality. Even as end-to-end systems rise, this concept remains important in many production environments.