Editing Hysteresis (section)

=== Voice and speech physiology ===
A hysteresis effect may be observed in voicing onset versus offset.<ref>{{Cite journal|title = A theoretical study of the hysteresis phenomenon at vocal fold oscillation onset–offset|journal = The Journal of the Acoustical Society of America|date = 1999|issn = 0001-4966|pages = 423–431|volume = 105|issue = 1|doi = 10.1121/1.424572|pmid = 9921668|first = Jorge C.|last = Lucero|bibcode = 1999ASAJ..105..423L }}</ref> The threshold value of the subglottal pressure required to start the vocal fold vibration is lower than the threshold value at which the vibration stops, when other parameters are kept constant. In utterances of vowel-voiceless consonant-vowel sequences during speech, the intraoral pressure is lower at the voice onset of the second vowel compared to the voice offset of the first vowel, the oral airflow is lower, the transglottal pressure is larger and the glottal width is smaller.