Purpose In this study, the authors aimed to determine the relationship between relative
fundamental frequency (RFF) and listener perception of vocal effort in individuals with …

Purpose This study tested the hypothesis that individuals with vocal hyperfunction would
show decreases in relative fundamental frequency (RFF) surrounding a voiceless …

Purpose The purpose of this study was to determine whether the relative fundamental
frequency (RFF) surrounding a voiceless consonant in patients with hyperfunctionally …

Purpose The acoustic measure relative fundamental frequency (RFF) was investigated as a
potential objective measure to track variations in vocal effort within and across individuals …

Excessive vocal effort is a common clinical voice symptom, yet the acoustical manifestation
of vocal effort and how that is perceived by speakers and listeners has not been fully …

Objective Relative fundamental frequency (RFF) has been investigated as a possible
acoustic measure to assess laryngeal tension. This study aimed to identify possible factors …

Purpose This study investigated the use of neck-skin acceleration for relative fundamental
frequency (RFF) analysis. Method Forty individuals with voice disorders associated with …

The acoustic measure, relative fundamental frequency (RFF), has been proposed as an
objective metric for assessing vocal hyperfunction; however, its underlying physiological …

Relative fundamental frequency (RFF) is an acoustic measure that characterizes changes in
voice fundamental frequency during voicing transitions. Despite showing promise as an …

Purpose Vocal hyperfunction, related to abnormal laryngeal muscle activity, is considered
the proximal cause of primary muscle tension dysphonia (pMTD). Relative fundamental …