title: Acoustic and capacity analysis of voice academic teachers with diagnosed hyperfunctional dysphonia by using DiagnoScope Specialist software.
abstract: OBJECTIVE
  The aim of the study was to assess the acoustic and capacity analyses of voice in academic teachers with hyperfunctional dysphonia using DiagnoScope Specialist software.
  
  
  METHODS
  The study covered 46 female academic teachers aged 34-48 years. The women were diagnosed with hyperfunctional dysphonia (with absence of organic pathologies). Having obtained the informed consent, a primary medical history was taken, videolaryngoscopic and stroboscopic examinations were performed and diagnostic voice acoustic and capacity analyses were carried out using DiagnoScope Specialist software.
  
  
  RESULTS
  The acoustic analysis carried out of academic teachers with diagnosed hyperfunctional dysphonia showed enhancement in the following parameters: fundamental frequency (FO) by 1.2%; relative average perturbation (Jitter by 100.0% and RAP by 81.8%); relative amplitude perturbation quotient (APQ) by 2.9%; non-harmonic to harmonic ratio (U2H) by 16.0%; and noise to harmonic ratio (NHR) by 13.4%. A decrease of 2.5% from normal values was noted in relative amplitude perturbation (Shimmer). Formant frequencies also showed reduction (F1 by 10.7%, F2 by 5.1%, F3 by 2.2%, and F4 by 3.5%). The harmonic perturbation quotient (HPQ) was 0.8% lower and the residual harmonic perturbation quotient (RHPQ) 16.8% lower, with the residual to harmonic (R2H) decreasing by 35.1 per cent; the sub-harmonic to harmonic (S2H) by 2.4%; and the Yanagihara coefficient by 20.2%.
  
  
  CONCLUSIONS
  The capacity analysis with the DiagnoScope Specialist software showed figures significantly lower than normal values of the following parameters: phonation time, true phonation time, phonation break coefficients, vocal capacity coefficient and mean vocal capacity.
authors.affiliation: Department of Otolaryngology and Laryngological Oncology, Medical University of Lodz, Poland.
authors.forename: Hanna
authors.initials: H
authors.lastname: Zielińska-Bliźniewska
authors.forename: Piotr
authors.initials: P
authors.lastname: Pietkiewicz
authors.forename: Jarosław
authors.initials: J
authors.lastname: Miłoński
authors.forename: Joanna
authors.initials: J
authors.lastname: Urbaniak
authors.forename: Jurek
authors.initials: J
authors.lastname: Olszewski
mesh_terms: D000328:Adult; D019937:Diagnostic Techniques and Procedures; D055154:Dysphonia / Q000175:diagnosis*; D005178:Faculty; D005260:Female; D006801:Humans; D020704:Laryngoscopes; D008875:Middle Aged; D009784:Occupational Diseases / Q000175:diagnosis*; D012984:Software; D013061:Speech Acoustics; D064706:Vocal Cord Dysfunction / Q000175:diagnosis*