Secondary cues to coda voicing and vowel duration
The production of voicing in coda consonants is reflected in a range of acoustic correlates, driven by articulatory constraints. However, not all of these acoustic characteristics are used as perceptual cues to voicing. I provide an overview of acoustic correlates of voicing in production and present perceptual data demonstrating that only some of these acoustic characteristics influence listeners’ decisions about coda voicing. Furthermore, because some of these acoustic characteristics exist in production but are not perceived as cues to voicing, they are particularly well situated to contribute to secondary voicing-conditioned effects. The second part of my talk examines how some of the same acoustic characteristics that are caused by coda voicing influence perception of vowel duration. In particular, spectral tilt and intensity contour have a large effect on perceived duration; higher spectral tilt and steeper decreases in intensity, as caused by voiceless codas, also decrease the perceived duration of vowels. This relationship provides a possible perceptual pathway for the development of the frequently attested pattern of voicing-conditioned vowel duration.