Sixth International Conference on Spoken Language Processing
October 16-20, 2000
The Production of Real and Non-Words in Adult Stutterers and Non-Stutterers: An Acoustic Study
S. P. Whiteside, R. A. Varley, T. Phillips, H. Garety
Department of Human Communication Sciences, University of Sheffield, UK
Dual-route models of speech production suggest that highfrequency
forms are encoded in different ways from lowfrequency
and novel forms [1, 2, 3]. There is some evidence
to suggest that lexical status may have some influence on
stuttering behaviour, with higher incidences of stuttering being
observed for low frequency words [4, 5]. This paper reports on
a study, which investigated the production of high and low
frequency words, and non-words in two groups of young adult
male speakers. The first, comprised a group of speakers with
stuttering (N=4), and the second, speakers without stuttering
(N=5). Three repetitions were elicited from each subject via a
repetition task and recorded onto DAT. These data were
subsequently digitised at a sampling rate of 20 kHz. Two
parameters were measured (in milliseconds) from the digitised
samples using a KAY Elemetrics Computerised Speech Lab: 1)
Response latencies (time taken to respond to a stimulus); and 2)
word durations (duration of utterance). We report here on the
first repetition of the high/low frequency and non-words.
The results are presented and discussed with reference to
implications for the production of frequent and novel forms,
motor speech learning, and how motor speech disorders such as
stuttering can shed some light on speech encoding mechanisms.
- Levelt, W. J. M. and Wheeldon, L. "Do speakers have
access to a mental syllabary?", Cognition, 50, 1994, 239-
- Varley, R. A. and Whiteside, S. P. "What is the underlying
impairment in acquired apraxia of speech?", Aphasiology.
- Whiteside, S. P. and Varley, R. A. "A new
conceptualisation of apraxia of speech: a synthesis of
evidence", Cortex, 34, 1998, 221-231.
- Hubbard, CP, Prins, D. "Word familiarity, syllabic stress
pattern, and stuttering", Journal of Speech and Hearing
Research, 37, 1994, 564-571.
- Peters, H. F. M., Hulstijn, W. and Van Lieshout, P. H. H. M.
"Recent developments in speech motor research into
stuttering", Folia Phoniatrica et Logopaedica, 52, 2000,
Whiteside, S. P. / Varley, R. A. / Phillips, T. / Garety, H. (2000):
"The production of real and non-words in adult stutterers and non-stutterers: an acoustic study",
In ICSLP-2000, vol.2, 515-518.