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The primary goal of this study was to evaluate a nonlinear dynamic approach to the acoustic analysis of dysphonia associated with vocal fold scar and sulcus vocalis.Case-control study.Acoustic voice samples from scar/sulcus patients and age-/sex-matched controls were analyzed using correlation dimension (D 2 ) and phase plots, time-domain based perturbation indices (jitter, shimmer, signal-to-noise...
Smoking results in a voice change, and the perception by smokers of an abnormal voice may encourage quitting behavior. Moreover, a disordered voice is often the first sign of vocal pathology. Efforts to evaluate voice have focused on classical acoustic analysis; however, nonlinear dynamic analysis has been shown to be a reliable objective method for the evaluation of voice. We compare the discriminatory...
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