The role of the age and gender, and the complexity of the syntactic unit in the perception of affective emotions in voice.

Purpose: The study aimed to identify (1) whether the age and gender of listeners and the length of vocal stimuli affect emotion discrimination accuracy in voice; and (2) whether the determined level of expression of perceived affective emotions is age and gender-dependent.

Methods: Thirty-two age-matched listeners listened to 270 semantically neutral voice samples produced in neutral, happy, and angry intonation by ten professional actors. The participants were required to categorize the auditory stimulus based on three options and judge the intensity of emotional expression in the sample using a customized tablet web interface.

The effect of sound field amplification systems on vocal demand response in teachers during lessons.

Purpose: Sound pressure level (SPL), fundamental frequency (F), time dose (D), cycle dose (D), and distance dose (D) are components affecting a vocal demand response. The study aimed to investigate the impact of sound field amplification systems (SFAS) on teachers' vocal parameters and determine the user comfort of SFAS use in teachers.

Methods: Twenty female teachers underwent long-term voice dosimetry with Vocal Holter Med (PR.

Choral Conductors Vocal Loading in Rehearsal Simulation Conditions.

Objectives: Choir conductors represent a profession with an intensive vocal load. The present study aims to investigate the impact of 40 minutes vocal loading tasks on fundamental frequency (F0), jitter (Jitt), shimmer (Shim), median cepstral peak prominence (CPPs), and CPPs standard deviation in specific acoustic conditions.

Method: Eighteen amateur choir conductors (13 female, five male) participated in the study.

Investigating voice differences in teachers with and without self-reported voice disorders, and healthcare workers without self-reported voice disorders.

Objective: The present study had two objectives: (1) to investigate differences in voice parameters between teachers with and without self-reported voice disorders and (2) to find differences in voice parameters between teachers and healthcare workers without self-reported voice disorders.

Method: Three respondents' groups were formed: teachers with self-reported voice disorders (mean age, 47 years; range, 34-60 years), teachers without self-reported voice disorders (46; 27-64), and healthcare workers without self-reported voice disorders (45; 31-63). All participants were women.

Epidemiology of Voice Disorders in Latvian School Teachers.

Objectives: The prevalence of voice disorders in the teacher population in Latvia has not been studied so far and this is the first epidemiological study whose goal is to investigate the prevalence of voice disorders and their risk factors in this professional group.

Methods: A wide cross-sectional study using stratified sampling methodology was implemented in the general education schools of Latvia. The self-administered voice risk factor questionnaire and the Voice Handicap Index were completed by 522 teachers.

Adaptation and validation of the Voice Handicap Index in Latvian.

Objectives: To establish psychometric indicators of the Voice Handicap Index (VHI) (Latvian version) and their relationship to the psychometric indicators of the original items.

Study Design: Parallel group design.

Methods: The VHI was translated and adapted to Latvian.