A Computer-assisted Learning Software Using Speech Synthesis and Recognition in Brazilian Portuguese

This work presents a new version of LaPSTalk: a computer-assisted software for English language learning. All the speech interfaces (recognition and synthesis) were implemented using the Microsoft Speech Application Development (SAPI 5.1) toolkit. Also, adopting the Microsoft provided engines: Microsoft English Recognizer 5.1, Microsoft Speech Recognition Sample Engine for Brazilian Portuguese and L&H TTS, the user-system interface can be done through English and Brazilian Portuguese languages. Another feature is the custom agent, Merlin, a Microsoft Speech Agent component that provides feedback and assistance.