Voice Assessment and Interpretation (Acoustic Voice Analysis-Glottal Inverse Filtering-Biomechanical Analysis)
09-10, 07:30– (Europe/Istanbul), Phoniatrics 1

This is an instructional course on Voice Assessment and Interpretation (Acoustic Voice Analysis-Glottal Inverse Filtering-Biomechanical Analysis). Background While acoustic analysis has been a staple in voice clinics for decades, traditional measures like jitter, shimmer, and HNR often fail to capture the underlying physiological cause of a voice disorder. Modern phoniatrics necessitates a more in-depth examination of the laryngeal mechanism. By integrating Glottal Inverse Filtering (GIF) and Biomechanical Analysis, clinicians can now separate the "source" (vocal fold vibration) from the "filter" (vocal tract resonance). This shift allows for a non-invasive assessment of subglottic pressure, glottal efficiency, and tissue stiffness—parameters previously only estimated through invasive or purely subjective means. Description This instructional course provides a hands-on clinical framework for the multidimensional assessment of voice. Participants will be guided through the transition from standard acoustic metrics to advanced Biomechanical modelling. The course covers the technical foundations of Glottal Inverse Filtering, demonstrating how to extract the glottal flow waveform to visualize how vocal folds actually collide and vibrate. Attendees will learn to interpret biomechanical reports that quantify parameters such as percentage of closured or opened glottal area, mucosal wave indexes, glottal gap amplitude and size and many others. Through clinical case studies, the session will demonstrate how to synthesize these complex data points into a coherent diagnosis and a targeted rehabilitation or surgical plan. Outcome Objectives By the end of this course, participants will be able to:

  1. Execute and Interpret advanced acoustic protocols that go beyond basic frequency and amplitude perturbations.

  2. Utilize Glottal Inverse Filtering data to assess glottal closure patterns and aerodynamic efficiency in patients with organic and functional lesions.

  3. Analyze Biomechanical Parameters to differentiate between compensatory hyper/hypofunction and primary tissue pathology (e.g., scarring vs. atrophy).

  4. Integrate Objective Data into the clinical decision-making process for surgical candidacy and the monitoring of voice intervention progress.

  5. Standardize Reporting of objective voice data to improve communication within multidisciplinary teams (Phoniatricians, ENTs, SLPs, and Neurologists).

This proposal focuses on the clinical application of advanced vocal assessment, moving from theoretical signal processing to bedside interpretation.
Ramon Hernandez-Villoria

Ramón Hernández-Villoria [ra.ˈ moŋ | eɾ.ˈ nan.des.bi. ˈʝo.ɾja.]

https://orcid.org/0000-0002-7361-2919

Born and living in Venezuela, South America.

I was born in Caracas, Venezuela, where I graduated as Medical Doctor in 1995. Four years later I got my postgraduated degree as Specialist in Phoniatrics. Many years after I got degree as M.Sc. in  in Linguistics. From 2000 to 2020 I was Titular Professor in Instituto Universitario Venezolano de la Audición y el Lenguaje. I runned also like Invited Professor in Universidad Central de Venezuela (Occupational Medicine) Universidad de los Andes-Mérida (Applied Phonetics), Universidad Santa María (Pediatric Dentistry) and now, in Universidad de Oriente. From 2008 through 2012 I coordinated the academic teamwork that designed the non-medical National Training Program in Fonoaudiología (speech therapy and technical audiology), which led to the opening of the respective degree in seven public universities.

 I have participated as a speaker in numerous conferences on phoniatrics, language and speech therapy and audiology at an international level. In fact, I was the first native of my country to give oral presentations at the International Congress of the former International Association of Logopedics and Phoniatrics (at Turin 2013) and World Congress of Audiology (at Melbourne, 2014). Also, I have been part of Faculty of 31<sup>st</sup> UEP (Union of European Phoniatricians) Congress in Praga, 2025.

 From 2008 to 2016 I was National Coordinator of Ministry of Health for Hearing, Voice and Speech Disabilities. In this function I developed the setting of the National Hearing Aids Laboratories Network in 16 of 24 States. Also, I set the National Neonatal Hearing Screening in 120 Hospitals in 24/24 States. Thirty two Phoniatics Services over 18 States were developed in this period.

Since 2016 I have been dedicated to private practice in my own 2008 founded clinic: "Centro Clínico de Audición y Lenguaje Cealca" and also I work in the "Hospital de Clínicas Caracas" since 2018. I focus on audiovestibular medicine, voice acoustic analysis, swallowing, language in children and adults.

I am an independent researcher, investigating about auditory electrophysiology and voice acoustic analysis. In this field, I am co-editor of the book “Voice-related biomarkers”, published in 2025.

Currently, I am a member of Union of European Phoniatricians (UEP), since 2016, and now I am integrating these UEP-Committees: Education, Hearing & Language and Biomarkers in Phoniatrics. I am a member since 2024 of the Collegium Medicorum Theatri, an international medical society on artistic voice. I have been member of International Association of Phoniatrics and Logopedic (IALP), of International Society of Audiology (ISA) as well as International Phonetics Association (IPA). Besides, I am member of International Society for Clinical Physiology and Physiopathology (ISCPP) based in Moscow. In Venezuela, I was Board Secretary of the "Sociedad Venezolana de Foniatría" since 2006 until 2022

This speaker also appears in:
Gabriela Guerra
This speaker also appears in:
roberto Fernández-Baillo