Table 1 Vocal effort response features used for clustering.
From: Voice fatigue subtyping through individual modeling of vocal demand responses
Feature | Formula |
|---|---|
VER linear slope | Slope of the linear fit of the six vocal effort ratings during the vocal loading task |
VER linear fit | The goodness of fit coefficient of the linear fit of the six vocal effort ratings during the vocal loading task |
VER linear offset | The intercept value of the linear fit of the six vocal effort ratings during the vocal loading task |
Noise demand response | \(VER_5 - VER_0\); Difference between vocal effort level rating after 5 min of vocal loading and the vocal effort rating level prior to the loading task |
Temporal demand response | \(VER_{30} - VER_5\); Difference between vocal effort rating after 30 min of vocal loading and the vocal effort rating after 5 min of vocal loading |
Noise recovery response | \(VER_{post} - VER_{30}\); Difference between vocal effort rating after vocal loading task but no background noise and the vocal effort rating after 30 min of vocal loading |
VER difference | \(VER_{post} - VER_0\); Difference between vocal effort rating after vocal loading task but no background noise and the vocal effort rating prior to the loading task |
VER maximum | \(max(VER_5, ...,VER_{30})\); Maximum vocal effort rating during the vocal loading test |
VER minimum | \(min(VER_5, ...,VER_{30})\); Minimum vocal effort rating during the vocal loading test |
VER range | \(VER_{max} - VER_{min}\); Difference between the maximum and minimum vocal effort ratings during the vocal loading task |
