Abstract Background Injection laryngoplasty is a surgical procedure used in management of glottal insufficiency. The objective this study was to assess respiratory and voice outcomes office-based injection patients with unilateral vocal fold paralysis (UVFP). Ten underwent via transcutaneous approach using Radiesse or hyaluronic acid. Auditory perceptual assessment (APA), handicap index (VHI), ...

Irregular phonation (also called creaky voice, glottalization and laryngealization) may have various communicative functions in speech. Thus the automatic classification of phonation type into regular and irregular can have a number of applications in speech technology. In this paper, we propose such a classifier that extracts six acoustic cues from vowels and then labels them as regular or irr...

BACKGROUND An objective determination of the range of vocal efficiency is rather difficult. The aim of the study was to assess the possibility of application of short-term acoustic efficiency analysis in diagnosing occupational voice disorders. MATERIAL AND METHODS The study covered 98 people (87 women and 11 men) diagnosed with occupational dysphonia throuigh videostroboscopic examination. T...

Phonation was induced in 10 mongrel dogs under general anesthesia by way of transtracheal stimulation of the recurrent laryngeal nerves under conditions of constant air flow. Although stimulation voltages were approximately 10 times the voltage required for direct stimulation, no cardiac or respiratory abnormalities were observed. Photoglottographic and electroglottographic signals were the sam...

OBJECTIVES/HYPOTHESIS Phonation threshold flow (PTF) may provide a tool to assess laryngeal function and could differentiate between normal and pathological voices. Both polyps and nodules contribute to an increased PTF by creating an incomplete glottal closure and increased vocal fold mass and thickness. STUDY DESIGN Prospective study. METHODS The Kay Elemetrics Phonatory Aerodynamic Syste...

The influence of vocal fold geometry and stiffness on phonation onset was experimentally investigated using a body-cover physical model of the vocal folds. Results showed that a lower phonation threshold pressure and phonation onset frequency can be achieved by reducing body-layer or cover-layer stiffness, reducing medial surface thickness, or increasing cover-layer depth. Increasing body-layer...

Background: rehabilitation of individuals with total laryngectomy. Aim: to correlate the voice and speech proficiency of individuals with total laryngectomy, users of tracheoesophageal, prosthesis with the intraluminal pharyngoesophageal transition pressure at rest and during phonation. Method: twelve individuals with total laryngectomy and with tracheoesophageal voice, users of speech prosthes...

Infant phonation is highly variable in many respects, including the basic vibratory patterns by which the vocal tissues create acoustic signals. Previous studies have identified the regular occurrence of nonmodal phonation types in normal infant phonation. The glottis is like many oscillating systems that, because of nonlinear relationships among the elements, may vibrate in ways representing t...

One of the most intriguing aspects of phonetic science is the number of distinguishable layers within the speech signal. Within even a single segment, such as a vowel, speakers control vowel quality, duration, F0, speech style, and so forth. Listeners, in turn, have learned to pay attention to these different acoustic layers in order to extract meaningful information from the speech signal. Pho...