title: Relationship Between Acoustic Voice Onset and Offset and Selected Instances of Oscillatory Onset and Offset in Young Healthy Men and Women.
abstract: OBJECTIVE
  This study aimed to investigate the relationship between (1) onset of the acoustic signal (X1a) and prephonatory phases associated with oscillatory onset and (2) offset of the acoustic signal (X2a) with the postphonatory events associated with oscillatory offset across vocally healthy adults.
  
  
  METHODS
  High-speed videoendoscopy was captured simultaneously with the acoustic signal during repeated production of /hi.hi.hi/ at typical pitch and loudness from 56 vocally healthy adults (aged 20-42 years; 21 men, 35 women). The relationships between the acoustic sound pressure signal and oscillatory onset and offset events from the glottal area waveforms (GAWs) were statistically investigated using a multivariate linear regression analysis.
  
  
  RESULTS
  The X1ais a significant predictor of the onset of first oscillatory motion (X1g) and onset of sustained oscillations (X2g). X1aas well as gender are significant predictors of the first medial contact of the vocal folds (X1.5g). The X2ais a significant predictor of the first instance of oscillatory offset (X3g), first instance of incomplete glottal closure (X3.5g), and complete cessation of (vocal fold) oscillatory motion (X4g).
  
  
  CONCLUSIONS
  The acoustic signal onset is closely related to the X1.5g, but the latency between these events is longer for women compared to men. The X2aoccurs immediately after incomplete glottal adduction. The emerging normative group latencies between the onset and offset of the acoustic and the GAW from this study appear promising for future investigations.
authors: Department of Speech and Hearing Sciences, Indiana University, Bloomington, Indiana. Electronic address: patelrir@indiana.edu.
authors: Rita R
authors: RR
authors: Patel
authors: Department of Speech and Hearing Sciences, Indiana University, Bloomington, Indiana.
authors: Karen
authors: K
authors: Forrest
authors: Department of Speech and Hearing Sciences, Indiana University, Bloomington, Indiana.
authors: Drew
authors: D
authors: Hedges
mesh_terms: D000162:Acoustics; D000328:Adult; D000367:Age Factors; D005260:Female; D064368:Healthy Volunteers; D006801:Humans; D007828:Laryngoscopy; D008297:Male; D009991:Oscillometry; D010699:Phonation; D011312:Pressure; D011930:Reaction Time; D012737:Sex Factors; D012815:Signal Processing, Computer-Assisted; D013061:Speech Acoustics; D013997:Time Factors; D014741:Video Recording; D014827:Vocal Cords / Q000000981:diagnostic imaging / Q000502:physiology*; D014833:Voice Quality; D055815:Young Adult
keywords: High-speed videoendoscopy; Oscillatory offset time; Oscillatory onset time; Voice offset time; Voice onset time