Audiology and Speech Research

REVIEW PAPER A Literature Review of Speech-Language Characteristics in Semantic Variant Primary Progressive Aphasia
The purpose of this study is to examine recent research trends on the speech and language characteristics of semantic variant primary progressive aphasia (svPPA) from 2010 to the present in order to facilitate the accurate interpretation and application of clinical criteria in c...

RESEARCH PAPER Comparison of in-the-Ear Hearing Aids Made with Ear Impressions and Digital Medical Imaging: Preliminary Study
Purpose: To compare the fit and acoustic performance of hearing aids fabricated using digital medical imaging (DMI) with those produced using the conventional ear impression method. Methods: The participants included individuals with normal hearing (one ear) and those with mod...

RESEARCH PAPER The Evolution of Male Voice Acoustics: A Lifespan Perspective
Purpose: The acoustic parameters of voice, including fundamental frequency (F0), Jitter, Shimmer (dB), and noise-to-harmonic ratio (NHR), exhibit significant changes across the male lifespan. These variations are influenced by anatomical, physiological, and neuromuscular changes...