Voice disorders are rather common: the NIDCD reports that at least 7.5 million people in the United States have vocal problems [1]. To address this problem, voice scientists have developed various objective vocal health measurements [3???6]. To further study those measurements, vocal health practitioners have collected and organized speech databases [3,4,6]. One standard for evaluation of these measurements is the GRBAS Scale [7]. This scale achieves strong perceptual agreement among medical professionals with respect to a speaker's vocal health. In broad terms, dysphonia represents a marked difficulty in producing voiced phonation. As such, traditional voicing detection algorithms can fail on dysphonic voices [5].
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