Editing Voice analysis (section)

==Use in medicine==
A medical study of the voice can be, for instance, analysis of the voice of patients who have had a [[Polyp (medicine)|polyp]] removed from their [[vocal cords]] through an operation. Computerized methods can be used to assess such issues in an objective manner.<ref>{{Cite journal|last1=Toran|first1=SiKC|last2=Lal|first2=B. K.|date=2010|title=Objective voice analysis for vocal polyps following microlaryngeal phonosurgery|url=https://www.nepjol.info/index.php/KUMJ/article/view/3555|journal=Kathmandu University Medical Journal|language=en|volume=8|issue=2|pages=185–189|doi=10.3126/kumj.v8i2.3555|pmid=21209532|issn=1812-2078|doi-access=free}}</ref> An experienced voice therapist can quite reliably evaluate the voice, but this requires extensive training and is still subjective.

Another active research topic in medical voice analysis is [[vocal loading]] evaluation. The vocal cords of a person who speaks for an extended time suffer from tiring—that is, the process of speaking exerts a load on the vocal cords and tires the tissue. Among professional voice users (e.g., teachers, sales people) this tiring can cause voice failures and sick leaves. Voice analysis has been studied as an objective means to evaluate such problems.<ref>{{Cite journal|last1=Stemple|first1=Joseph C.|last2=Stanley|first2=Jennifer|last3=Lee|first3=Linda|date=1995|title=Objective measures of voice production in normal subjects following prolonged voice use|journal=Journal of Voice|volume=9|issue=2|pages=127–133|doi=10.1016/s0892-1997(05)80245-0|pmid=7620534|issn=0892-1997}}</ref>

Voice analysis was an important factor in the study of vocal cord paralysis. It effects different functions of the vocal cords, from speech to breathing and voice analysis is used to study the effectiveness of [[Thyroplasty]] (medialization thyroplasty) improvements on the vocal cords after the surgery. Traditional voice recording is used in pre-operation to record the voices of chosen patients to be compared with the post-operation usage, along with more complex recordings using an  [https://www2.ims.uni-stuttgart.de/EGG/frmst2.htm electroglottograpy], [[photoglottography]],<ref>{{Cite journal |last1=Gerratt |first1=Bruce R. |last2=Hanson |first2=David G. |last3=Berke |first3=Gerald S. |last4=Precoda |first4=Kristin |date=1991-01-01 |title=Photoglottography: A clinical synopsis |url=http://www.sciencedirect.com/science/article/pii/S0892199705801730 |access-date=2020-12-16 |journal=Journal of Voice |volume=5 |issue=2 |pages=98–105 |language=en |doi=10.1016/S0892-1997(05)80173-0|url-access=subscription }}</ref> and [[videokymography]]. Medical professionals have the ability to read and understand the results from the complex recordings, but knowledge from a voice professional is needed within these experiments for accurate results. Voice experts were an important to tie the physical examination of the vocal cords to the neurological examination to ensure the success of the surgery because of their trained ear. Perceptual evaluation of voice is heavily reliant on [[Phonation|voice quality]], a factor assessed preferably by voice specialists ([[Speech–language pathology|speech therapists]]). A professional voice analyzer has a trained ear and can block out excess variants that can be deceptive from the results.<ref>{{Cite journal|last1=Chowdhury|first1=Kanishka|last2=Saha|first2=Somnath|last3=Saha|first3=Vedula Padmini|last4=Pal|first4=Sudipta|last5=Chatterjee|first5=Indranil|date=2013-03-23|title=Pre and Post Operative Voice Analysis After Medialization Thyroplasty in Cases of Unilateral Vocal Fold Paralysis|journal=Indian Journal of Otolaryngology and Head & Neck Surgery|volume=65|issue=4|pages=354–357|doi=10.1007/s12070-013-0649-3|issn=2231-3796|pmc=3851511|pmid=24427598}}</ref>