Talkers are known to compensate only partially for experimentally-induced changes to their auditory feedback. In a typical experiment, talkers might hear their F1 feedback shifted higher (so that /[epsilon]/ sounds like /[ash]/, for example), and compensate by lowering F1 in their subsequent speech by about a quarter of that distance. Here, we…

The present study is concerned with lax /[upsilon]/-fronting in Standard British English and in particular with whether this sound change in progress can be attributed to a waning of the perceptual compensation for the coarticulatory effects of context. Younger and older speakers produced various monosyllables in which /[upsilon]/ occurred in…

The current experiments examined how native Parisian French and native Swiss French listeners use vowel duration in perceiving the /[openo]/-/o/ contrast. In both Parisian and Swiss French /o/ is longer than /[openo]/, but the difference is relatively large in Swiss French and quite small in Parisian French. In Experiment 1 we found a parallel…

American listeners' perception of Japanese contrasts of vowel length (e.g., kiro vs. kiiro), consonant length (e.g., kite vs. kitte) and syllable number/length (e.g., kjoo vs. kijoo) was examined. Stimuli consisted of sentence-length utterances produced by a native Japanese talker; five minimal pairs of each contrast type were included. Questions…

Recent research provides evidence that individuals shift in their perception of variants depending on social characteristics attributed to the speaker. This paper reports on a speech perception experiment designed to test the degree to which the age attributed to a speaker influences the perception of vowels undergoing a chain shift. As a result…

This study examines the role of abstractness during the activation of a lexical representation. Abstractness and conflict are directly modeled in our approach by invoking lexical representations in terms of contrastive phonological features. In two priming experiments with English nouns differing only in vowel height of their stem vowels (e.g.,…

L1-Spanish learners of English have been reported to distinguish English /i/ and /I/ on the basis of duration cues, whereas L1-English listeners primarily use spectral cues. Morrison (2008a) hypothesized that duration-based perception is a secondary developmental stage that emerges from an initial stage of multidimensional-category-goodness…

Previous research has shown that English infants are sensitive to mispronunciations of vowels in familiar words by as early as 15-months of age. These results suggest that not only are infants sensitive to large mispronunciations of the vowels in words, but also sensitive to smaller mispronunciations, involving changes to only one dimension of the…

L1-Spanish L2-English listeners' perception of a Canadian-English /bIt/-/bId/-/bit/-/bid/ continuum was investigated. Results were largely consistent with the developmental stages for L1-Spanish listeners' acquisition of English /i/ and /I/ hypothesized by Escudero (2000): Stage 0, inability to distinguish. Stage 1, duration based. Stage 2,…

This study evaluated whether age effects on second language (L2) speech learning derive from changes in how the native language (L1) and L2 sound systems interact. According to the "interaction hypothesis" (IH), the older the L2 learner, the less likely the learner is able to establish new vowel categories needed for accurate L2 vowel production…

Shows that vowel duration is a cue to voicing of syllable-final consonants. Notes that the effective duration of a vowel apparently extends over all parts of the acoustic signal, including the transitions reflecting the consequences of the coarticulation of vowel and consonant. (Author/RL)

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…

Two hypotheses have recently been put forward to account for listeners' ability to distinguish and learn contrasts between speech sounds in foreign languages. First, Best's Perceptual Assimilation Model and Flege's Speech Learning Model both predict that the ease with which a listener can tell one non-native phoneme from another varies directly…