Assessment of Communicative Features in Automated Speech Systems
Patent no.: 9,947,322
Inventor(s): Okim Kang, David Johnson
Description: Those learning a second language often undergo proficiency examinations or tests performed by human evaluators. These examinations are intended to allow the speech of the learner to be assessed and, in some systems, scored by the human evaluator using various criteria, such as fluency, to determine the learner’s proficiency such as the Test of English as a Second Language (TOEFL) administered by Education Testing Service (ETS) of Princeton, New Jersey. This technology relates to a speech processing program which applies automatic speech recognition (ASR) knowledge and acoustic/experimental phonetics. The system analyzes speech to create an automated score to predict the degree of nativeness or intelligibility of pronunciation and provide an accurate evaluation of a speaker’s communicative abilities.
Potential applications: Educational testing and automated speech interpretation applications.
Benefits and advantages: Text independent models/systems, such as this innovative system, use unstructured monologues from the speaker during assessment. Where the systems can accurately use the prosody of the speech to improve recognition of the words spoken, the models created and used by the systems can also accurately assess and provide feedback to a non-native language speaker.
Case no.: 2013-018
Licensing status: Available for Licensing