Measuring the Dysphonia Severity Index (DSI) in the Program Praat

Diagnostic Accuracy of Dysphonia Classification of DSI and AVQI

“…To summarize, it is not entirely unexpected that the AVQI as a measure of voice quality may not perform as well as DSI when discriminating between laryngoscopic‐negative and laryngoscopic‐positive findings. The DSI is considered mainly as a measure of vocal function and is presumed to reflect more adequately the capabilities or limitations in vocal functioning and may be applied as a universal measure of vocal performance and/or voice disorder . The AVQI, based on acoustic voice quality measures, is therefore considered to be more a measure of vocal sound quality.…”

“…The DSI is considered mainly as a measure of vocal function and is presumed to reflect more adequately the capabilities or limitations in vocal functioning and may be applied as a universal measure of vocal performance and/or voice disorder. 9,53 The AVQI, based on acoustic voice quality measures, is therefore considered to be more a measure of vocal sound quality. Thus, the AVQI could be assumed to be most appropriate for discrimination of disordered versus nondisordered voice quality groups on the basis of auditory-perceptual judgments.…”

Comparison of Dysphonia Severity Index and its Parameters Among Individuals with Multiple Sclerosis and Healthy Subjects

“…To record voice samples, an unidirectional dynamic cardioids AKG, C1000S microphone was connected to a portable computer at a distance of 10 cm, 45 degrees from the subject's mouth (13). Before recording the voice samples, the examiner described each task for the subjects and performed it practically.…”

“…As commonly accepted, evaluating several parameters is more reliable than evaluating only one parameter, such as fundamental frequency, shimmer, or jitter (11,12). This index has two versions of alpha and beta (11,13). The alpha version was designed in 2000 by Wuyts and colleagues; in this version, the examiner requires a software such as multi-dimensional voice program and voice range profile to execute and calculate each parameter (11).…”

“…Maryn et al, in 2017, designed the beta version for this formula; the beta version's feature is the possibility of using the Praat software. One of the benefits of this version for the dysphonia severity index, given the easy access to this software in comparison with other software, is that speech and language pathologists can easily investigate these parameters in everyday clinical practice (13). In general, this index is a valuable clinical tool for quantitative description of voice disorders and determining damage severity that has been used in researches in different countries and languages (12,14,15).…”