{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T06:01:06Z","timestamp":1777874466332,"version":"3.51.4"},"reference-count":35,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2025,7,1]],"date-time":"2025-07-01T00:00:00Z","timestamp":1751328000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2025,7,1]],"date-time":"2025-07-01T00:00:00Z","timestamp":1751328000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"funder":[{"DOI":"10.13039\/100000055","name":"National Institute on Deafness and Other Communication Disorders","doi-asserted-by":"publisher","award":["R01DC015570"],"award-info":[{"award-number":["R01DC015570"]}],"id":[{"id":"10.13039\/100000055","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000055","name":"National Institute on Deafness and Other Communication Disorders","doi-asserted-by":"publisher","award":["R43DC019585"],"award-info":[{"award-number":["R43DC019585"]}],"id":[{"id":"10.13039\/100000055","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","jvoice.org","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Journal of Voice"],"published-print":{"date-parts":[[2025,7]]},"DOI":"10.1016\/j.jvoice.2025.06.031","type":"journal-article","created":{"date-parts":[[2025,7,17]],"date-time":"2025-07-17T19:48:51Z","timestamp":1752781731000},"update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":0,"title":["Validation of a Python-Based Graphical User Interface for Calculation of Relative Fundamental Frequency"],"prefix":"10.1016","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7770-6464","authenticated-orcid":false,"given":"Mara R.","family":"Kapsner-Smith","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aideen","family":"Gill","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Abigail","family":"Muzila","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tamara","family":"Polyakova","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Austeja","family":"Rubeski","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6523-5527","authenticated-orcid":false,"given":"Joshua","family":"Kline","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8045-252X","authenticated-orcid":false,"given":"Cara E.","family":"Stepp","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jenny","family":"Vojtech","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.jvoice.2025.06.031_bib1","doi-asserted-by":"crossref","first-page":"448","DOI":"10.1067\/mhn.2002.128894","article-title":"Muscle tension dysphonia as a sign of underlying glottal insufficiency","volume":"127","author":"Belafsky","year":"2002","journal-title":"Otolaryngol\u2013Head Neck Surg"},{"key":"10.1016\/j.jvoice.2025.06.031_bib2","doi-asserted-by":"crossref","first-page":"2254","DOI":"10.1044\/2020_AJSLP-20-00104","article-title":"An updated theoretical framework for vocal hyperfunction","volume":"29","author":"Hillman","year":"2020","journal-title":"Am J Speech-Lang Pathol"},{"key":"10.1016\/j.jvoice.2025.06.031_bib3","doi-asserted-by":"crossref","first-page":"420","DOI":"10.1016\/j.jvoice.2009.12.009","article-title":"Does knowledge of medical diagnosis bias auditory-perceptual judgments of dysphonia?","volume":"25","author":"Eadie","year":"2011","journal-title":"J Voice"},{"key":"10.1016\/j.jvoice.2025.06.031_bib4","doi-asserted-by":"crossref","first-page":"718","DOI":"10.1002\/lary.28081","article-title":"Does the accuracy of case history affect interpretation of videolaryngostroboscopic exams?","volume":"130","author":"Sauder","year":"2020","journal-title":"Laryngoscope"},{"key":"10.1016\/j.jvoice.2025.06.031_bib5","doi-asserted-by":"crossref","first-page":"67","DOI":"10.1016\/j.jvoice.2009.08.001","article-title":"Comparison of neck tension palpation rating systems with surface electromyographic and acoustic measures in vocal hyperfunction","volume":"25","author":"Stepp","year":"2011","journal-title":"J Voice Off J Voice Found"},{"key":"10.1016\/j.jvoice.2025.06.031_bib6","doi-asserted-by":"crossref","first-page":"1638","DOI":"10.1002\/lary.24521","article-title":"Reliability of laryngostroboscopic evaluation on lesion size and glottal configuration: A revisit","volume":"124","author":"Yiu","year":"2014","journal-title":"Laryngoscope"},{"key":"10.1016\/j.jvoice.2025.06.031_bib7","doi-asserted-by":"crossref","first-page":"14","DOI":"10.1044\/1058-0360(2010\/09-0105)","article-title":"Establishing validity of the consensus auditory-perceptual evaluation of voice (CAPE-V)","volume":"20","author":"Zraick","year":"2011","journal-title":"Am J Speech-Lang Pathol"},{"key":"10.1016\/j.jvoice.2025.06.031_bib8","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1177\/000348941312200305","article-title":"Acoustic correlate of vocal effort in spasmodic dysphonia","volume":"122","author":"Eadie","year":"2013","journal-title":"Ann Otol Rhinol Laryngol"},{"key":"10.1016\/j.jvoice.2025.06.031_bib9","doi-asserted-by":"crossref","first-page":"178","DOI":"10.1016\/j.jvoice.2006.07.006","article-title":"Fundamental frequency change during offset and onset of voicing in individuals with Parkinson disease","volume":"22","author":"Goberman","year":"2008","journal-title":"J Voice"},{"key":"10.1016\/j.jvoice.2025.06.031_bib10","doi-asserted-by":"crossref","first-page":"1507","DOI":"10.1044\/2016_JSLHR-S-16-0262","article-title":"Relative fundamental frequency distinguishes between phonotraumatic and non-phonotraumatic vocal hyperfunction","volume":"60","author":"Heller Murray","year":"2017","journal-title":"J Speech Lang Hear Res JSLHR"},{"key":"10.1016\/j.jvoice.2025.06.031_bib11","doi-asserted-by":"crossref","first-page":"1349","DOI":"10.1044\/2021_JSLHR-21-00466","article-title":"Clinical cutoff scores for acoustic indices of vocal hyperfunction that combine relative fundamental frequency and cepstral peak prominence","volume":"65","author":"Kapsner-Smith","year":"2022","journal-title":"J Speech Lang Hear Res"},{"key":"10.1016\/j.jvoice.2025.06.031_bib12","doi-asserted-by":"crossref","first-page":"1002","DOI":"10.1044\/2016_JSLHR-S-15-0354","article-title":"Exploring the clinical utility of relative fundamental frequency as an objective measure of vocal hyperfunction","volume":"59","author":"Roy","year":"2016","journal-title":"J Speech Lang Hear Res JSLHR"},{"key":"10.1016\/j.jvoice.2025.06.031_bib13","doi-asserted-by":"crossref","first-page":"1637","DOI":"10.1121\/1.4776207","article-title":"Relative fundamental frequency during vocal onset and offset in older speakers with and without Parkinson\u2019s disease","volume":"133","author":"Stepp","year":"2013","journal-title":"J Acoust Soc Am"},{"key":"10.1016\/j.jvoice.2025.06.031_bib14","doi-asserted-by":"crossref","first-page":"1220","DOI":"10.1044\/1092-4388(2010\/09-0234)","article-title":"The impact of vocal hyperfunction on relative fundamental frequency during voicing offset and onset","volume":"53","author":"Stepp","year":"2010","journal-title":"J Speech Lang Hear Res"},{"key":"10.1016\/j.jvoice.2025.06.031_bib15","doi-asserted-by":"crossref","first-page":"1283","DOI":"10.1044\/2016_JSLHR-S-15-0406","article-title":"The relationship between relative fundamental frequency and a kinematic estimate of laryngeal stiffness in healthy adults","volume":"59","author":"McKenna","year":"2016","journal-title":"J Speech Lang Hear Res JSLHR"},{"key":"10.1016\/j.jvoice.2025.06.031_bib16","doi-asserted-by":"crossref","first-page":"3654","DOI":"10.1121\/10.0005006","article-title":"Physics of phonation offset: towards understanding relative fundamental frequency observations","volume":"149","author":"Serry","year":"2021","journal-title":"J Acoust Soc Am"},{"key":"10.1016\/j.jvoice.2025.06.031_bib17","doi-asserted-by":"crossref","first-page":"712","DOI":"10.1177\/0003489417728088","article-title":"Validation of an algorithm for semi-automated estimation of voice relative fundamental frequency","volume":"126","author":"Lien","year":"2017","journal-title":"Ann Otol Rhinol Laryngol"},{"key":"10.1016\/j.jvoice.2025.06.031_bib18","doi-asserted-by":"crossref","first-page":"3184","DOI":"10.1121\/1.5131025","article-title":"Refining algorithmic estimation of relative fundamental frequency: accounting for sample characteristics and fundamental frequency estimation method","volume":"146","author":"Vojtech","year":"2019","journal-title":"J Acoust Soc Am"},{"key":"10.1016\/j.jvoice.2025.06.031_bib19","unstructured":"MathWorks. 2021. MATLAB 2021 [Computer software]."},{"key":"10.1016\/j.jvoice.2025.06.031_bib20","doi-asserted-by":"crossref","first-page":"3642","DOI":"10.1121\/1.423068","article-title":"Fundamental frequency during phonetically governed devoicing in normal young and aged speakers","volume":"103","author":"Watson","year":"1998","journal-title":"J Acoust Soc Am"},{"key":"10.1016\/j.jvoice.2025.06.031_bib21","series-title":"Three Areas of Experimental Phonetics: Stress and Respiratory Activity, the Nature of Vowel Quality, Units in the Perception and Production of Speech","author":"Ladefoged","year":"1967"},{"key":"10.1016\/j.jvoice.2025.06.031_bib22","doi-asserted-by":"crossref","first-page":"264","DOI":"10.1159\/000259885","article-title":"Physics of laryngeal behavior and larynx modes","volume":"34","author":"Stevens","year":"1977","journal-title":"Phonetica"},{"key":"10.1016\/j.jvoice.2025.06.031_bib23","doi-asserted-by":"crossref","first-page":"894","DOI":"10.1016\/j.jvoice.2018.07.020","article-title":"Modulation of relative fundamental frequency during transient emotional states","volume":"33","author":"van Mersbergen","year":"2019","journal-title":"J Voice"},{"key":"10.1016\/j.jvoice.2025.06.031_bib24","doi-asserted-by":"crossref","first-page":"475","DOI":"10.3390\/bioengineering11050475","article-title":"Relative fundamental frequency: only for hyperfunctional voices? A pilot study","volume":"11","author":"Ferr\u00e1n","year":"2024","journal-title":"Bioengineering"},{"key":"10.1016\/j.jvoice.2025.06.031_bib25","doi-asserted-by":"crossref","DOI":"10.1016\/j.jvoice.2024.10.025","article-title":"Characterizing vocal hyperfunction using ecological momentary assessment of relative fundamental frequency","author":"Cheema","year":"2024","journal-title":"J Voice"},{"key":"10.1016\/j.jvoice.2025.06.031_bib26","doi-asserted-by":"crossref","first-page":"1260","DOI":"10.1044\/1092-4388(2011\/10-0274)","article-title":"Effects of voice therapy on relative fundamental frequency during voicing offset and onset in patients with vocal hyperfunction","volume":"54","author":"Stepp","year":"2011","journal-title":"J Speech Lang Hear Res"},{"key":"10.1016\/j.jvoice.2025.06.031_bib27","doi-asserted-by":"crossref","first-page":"391","DOI":"10.1002\/lary.29763","article-title":"Impact of face masks on speech acoustics and vocal effort in healthcare professionals","volume":"132","author":"McKenna","year":"2022","journal-title":"Laryngoscope"},{"key":"10.1016\/j.jvoice.2025.06.031_bib28","doi-asserted-by":"crossref","first-page":"802.e15","DOI":"10.1016\/j.jvoice.2021.04.016","article-title":"Voice acoustics and vocal effort in mask-wearing healthcare professionals: a comparison pre- and post-workday","volume":"37","author":"McKenna","year":"2023","journal-title":"J Voice"},{"key":"10.1016\/j.jvoice.2025.06.031_bib29","doi-asserted-by":"crossref","first-page":"966.e9","DOI":"10.1016\/j.jvoice.2021.11.006","article-title":"Developing educational health modules to improve vocal wellness in mask-wearing occupational voice users","volume":"38","author":"McKenna","year":"2024","journal-title":"J Voice"},{"key":"10.1016\/j.jvoice.2025.06.031_bib30","doi-asserted-by":"crossref","first-page":"8121","DOI":"10.3390\/app12168121","article-title":"A scoping literature review of relative fundamental frequency (RFF) in individuals with and without voice disorders","volume":"12","author":"McKenna","year":"2022","journal-title":"Appl Sci"},{"key":"10.1016\/j.jvoice.2025.06.031_bib31","series-title":"Excel (Version Microsoft 365) [Computer software]","year":"2024"},{"key":"10.1016\/j.jvoice.2025.06.031_bib32","unstructured":"Python Software Foundation. 2019. Python Language (Version 3.8) [Computer software]."},{"key":"10.1016\/j.jvoice.2025.06.031_bib33","series-title":"SWIPE: A Sawtooth Waveform Inspired Pitch Estimator for Speech and Music","author":"Camacho","year":"2007"},{"key":"10.1016\/j.jvoice.2025.06.031_bib34","series-title":"Workshop on Acoustic Voice Analysis: Summary Statement","author":"Titze","year":"1995"},{"key":"10.1016\/j.jvoice.2025.06.031_bib35","doi-asserted-by":"crossref","first-page":"1638","DOI":"10.1121\/1.2951592","article-title":"A sawtooth waveform inspired pitch estimator for speech and music","volume":"124","author":"Camacho","year":"2008","journal-title":"J Acoust Soc Am"}],"container-title":["Journal of Voice"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0892199725002565?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0892199725002565?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T19:49:55Z","timestamp":1777578595000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0892199725002565"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,7]]},"references-count":35,"alternative-id":["S0892199725002565"],"URL":"https:\/\/doi.org\/10.1016\/j.jvoice.2025.06.031","relation":{},"ISSN":["0892-1997"],"issn-type":[{"value":"0892-1997","type":"print"}],"subject":[],"published":{"date-parts":[[2025,7]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Validation of a Python-Based Graphical User Interface for Calculation of Relative Fundamental Frequency","name":"articletitle","label":"Article Title"},{"value":"Journal of Voice","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.jvoice.2025.06.031","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2025 The Voice Foundation. Published by Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies.","name":"copyright","label":"Copyright"}]}}