title: Speech perception in individuals with auditory dys-synchrony: effect of lengthening of voice onset time and burst duration of speech segments.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the effect of lengthening of voice onset time and burst duration of selected speech stimuli on perception by individuals with auditory dys-synchrony. This is the second of a series of articles reporting the effect of signal enhancing strategies on speech perception by such individuals.
  
  
  METHODS
  Two experiments were conducted: (1) assessment of the 'just-noticeable difference' for voice onset time and burst duration of speech sounds; and (2) assessment of speech identification scores when speech sounds were modified by lengthening the voice onset time and the burst duration in units of one just-noticeable difference, both in isolation and in combination with each other plus transition duration modification.
  
  
  RESULTS
  Lengthening of voice onset time as well as burst duration improved perception of voicing. However, the effect of voice onset time modification was greater than that of burst duration modification. Although combined lengthening of voice onset time, burst duration and transition duration resulted in improved speech perception, the improvement was less than that due to lengthening of transition duration alone.
  
  
  CONCLUSIONS
  These results suggest that innovative speech processing strategies that enhance temporal cues may benefit individuals with auditory dys-synchrony.
authors.affiliation: Department of Audiology, All India Institute of Speech and Hearing, Naimisham Campus, Manasagangothri, Mysore, India. ajithkumar18@gmail.com
authors.forename: U A
authors.initials: UA
authors.lastname: Kumar
authors.forename: M
authors.initials: M
authors.lastname: Jayaram
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001308:Auditory Perceptual Disorders; D004056:Differential Threshold; D016057:Evoked Potentials, Auditory, Brain Stem; D005260:Female; D006313:Hearing Loss, Central / Q000503:physiopathology* / Q000523:psychology / Q000534:rehabilitation; D006801:Humans; D008297:Male; D010700:Phonetics; D013018:Sound Spectrography / Q000379:methods*; D013061:Speech Acoustics; D013067:Speech Perception / Q000502:physiology*; D014831:Voice; D055815:Young Adult