The Relationship Between Acoustic Signal Typing and Perceptual Evaluation of Tracheoesophageal Voice Quality for Sustained Vowels

The Pharyngoesophageal Segment After Total Laryngectomy

“…For those with good/reasonable voice quality, the correlation between poor voice quality and long time since the operation may be explained by the old age of the patients, which is in line with the results presented by Op de Coul et al 20 Given the time-consuming nature of the perceptual assessments, it might be reasonable to consider in future studies new methods such as the acoustic analysis with signal typing to assess voice quality and even automatic intelligibility assessment. 21-23…”

“…For those with good/reasonable voice quality, the correlation between poor voice quality and long time since the operation may be explained by the old age of the patients, which is in line with the results presented by Op de Coul et al 20 Given the time-consuming nature of the perceptual assessments, it might be reasonable to consider in future studies new methods such as the acoustic analysis with signal typing to assess voice quality and even automatic intelligibility assessment. [21][22][23] We chose HSC to obtain information on the vibratory pattern of the neoglottis since imaging of the PES should be independent of triggering based on the fundamental frequency as in stroboscopy. Patients with good/reasonable voice quality showed a strong mucosal wave, and the shape of the neoglottis was mainly circular.…”

Voice outcomes post total laryngectomy

“…In particular their agreement data was calculated with co-efficients criticised for artificially inflating agreement and designed for internal scale consistency [10,11]. Further, the tool has no follow-up data and the author herself utilised other scales in later research on perceptual judgements [12][13][14].…”

“…Acoustic signal typing, previously utilised in laryngeal voice [67], has been developed for tracheoesophageal voice [12,68]. This involved categorising tracheoesophageal voices into four subtypes based on raters' visual assessment of the acoustic content of narrow-band spectrograms supported by written guidelines [68].…”

“…This involved categorising tracheoesophageal voices into four subtypes based on raters' visual assessment of the acoustic content of narrow-band spectrograms supported by written guidelines [68]. Although a significant relationship was found between signal types and auditory-perceptual voice assessment for overall grade [68], a later study [12] concluded it offers " limited predictive information on voice quality" and cannot differentiate the key alaryngeal voice determinant of tonicity i.e. hypotonicity versus hypertonicity.…”