SPEAK: a speech synthesis system

The speech synthesis system described in this report comprises a letter-to-sound rule system with a supporting hardware phoneme synthesiser. Input ASCII text is converted to International Phonetic Alphabet phonemes through the application of letter-to-sound rules. These IPA phonemes are then converted to the representation required by the Votrax phoneme synthesiser and sent to be synthesised. The letterto-sound rules dictate a phonetic transcription to be given to various letter groupings.