14th International Congress of Phonetic Sciences (ICPhS-14)

San Francisco, CA, USA
August 1-7, 1999

Perceptual Correlates of Source Parameters in Breathy Voice

Christer Gobl, Ailbhe Ní Chasaide

Centre for Language and Communication Studies, Trinity College, Dublin, Ireland

The perceptual relevance of the major source correlates of breathy voice quality were tested with stimuli synthesised using KLSYN88 with the modified LF voice source option. Starting from an auditorily realistic breathy-voiced [a] reference vowel, a series of stimuli was constructed, where the following parameters were varied toward more typical modal values: excitation strength (EE), aspiration noise (AH), open quotient (OQ), speed quotient (SQ), spectral tilt (TL), F1/F2 bandwidths (B1/B2), and fundamental frequency (F0). These were varied individually and in combinations and tested on 12 subjects. Results suggest that spectral tilt is the main determinant of perceived breathiness. However, a high TL value does not necessarily yield a breathy voiced-percept, as the effect may be offset when the parameters OQ, SQ and B1/B2 are at more modal-like settings. Surprisingly, aspiration noise appeared to contribute relatively little. Differences between these results and those of an earlier study are discussed.

Full Paper

Bibliographic reference.  Gobl, Christer / Ní Chasaide, Ailbhe (1999): "Perceptual correlates of source parameters in breathy voice", In ICPhS-14, 2437-2440.