Two experiments investigate the effectiveness of audiovisual (AV) speech cues (cues derived from both seeing and hearing a talker speak) in facilitating perceptual learning of spectrally distorted speech. Speech was distorted through an eight channel noise-vocoder which shifted the spectral envelope of the speech signal to simulate the properties…

We report four experiments designed to determine whether visual information affects judgments of acoustically-specified nonspeech events as well as speech events (the "McGurk effect"). Previous findings have shown only weak McGurk effects for nonspeech stimuli, whereas strong effects are found for consonants. We used click sounds that…

Examined the processing of potential auditory and visual cues that differentiate statements from echoic questions. Found that both auditory and visual cues reliably conveyed statement and question intonation, were successfully synthesized, and generalized to other utterances. (Author/VWL)

We describe two experiments on signaling and detecting uncertainty in audiovisual speech by adults and children. In the first study, utterances from adult speakers and child speakers (aged 7-8) were elicited and annotated with a set of six audiovisual features. It was found that when adult speakers were uncertain they were more likely to produce…

This paper compares the production and perception of the rise-fall contour of contrastive statements and the final rise-fall part of polar questions in Greek. The results show that these superficially similar rise-falls exhibit fine phonetic differences in the alignment of tonal targets with the segmental string, and that these differences can be…