ABSTRACT
This chapter discusses the operationalization and scoring of pronunciation constructs using automatic speech recognition (ASR) systems using constrained tasks. It begins by distinguishing between computer-assisted pronunciation training (CAPT) pronunciation remediation systems and ASR pronunciation assessment systems. The chapter describes how the systems are developed and how proficient or native reference speakers can be used as a model against which to compare learner pronunciations. It illustrates how features of speech are extracted and weighted to score sub-constructs of pronunciation such as word sounds, stress, and intonation. The chapter looks ahead to future possible uses of this assessment technology, through the lens of English as an International Language (EIL). Areas where more improvements are needed include the ability to score pronunciation ability on unconstrained, spontaneous speech, versus the read aloud or constrained speech that has been much of the focus of the chapter.
