15th International Congress of Phonetic Sciences (ICPhS-15)

Barcelona, Spain
August 3-9, 2003

Perceptual and Acoustic Correlation in Consonant Identification After Partial Laryngectomy

Lise Crevier-Buchman (1), Shinji Maeda (2), D. Brasnu (3), Jacqueline Vaissière (1)

(1) Laboratoire de Phonétique et Phonologie-CNRS, France
(2) ENST-CNRS, France
(3) Hopital Europeen Georges Pompidou, France

The purpose of this study was two fold: i) to evaluate the voicing feature and ii) to determine the correlation between perceptual and acoustic characteristics of French voiced and voiceless stop consonants produced by 10 patients after supracricoid partial laryngectomy (SCPL). In SCPL patients' speech, voice is produced by a neoglottis located at approximately 3 cm above the removed vocal folds, thus shortening the vocal-tract length. A perceptual evaluation was conducted for the 6 French stop voiced and voiceless consonants [p, t, k, b, d, g], in a syllabic context [CV]. The acoustic analysis of spectrograms served to determine what acoustic variables were used as cues for voicing distinction. The results are for i) perception test: voiced consonants were perceived as voiceless consonants (24%), ii) acoustic analysis: the absence of voicing murmur, the weakness of the burst and the short duration of the consonant seems to be responsible for perceived voiceless consonants for our patient's voiced consonants. Consonant articulation appears to impose certain constraints on voicing ability in SCPL patients. Presumably, this poor voicing ability is the direct consequence of the mechanical properties of the neoglottis.

Full Paper

Bibliographic reference.  Crevier-Buchman, Lise / Maeda, Shinji / Brasnu, D. / Vaissière, Jacqueline (2003): "Perceptual and acoustic correlation in consonant identification after partial laryngectomy", In ICPhS-15, 2361-2364.