11/4/2023 0 Comments Praat script compute f0 statistiscThe collection of voice databases for testing and comparing the analysis methods is regarded as an important research area. However, despite the variety of models and methods developed by signal processing engineers, voice clinicians still express their disappointment with regard to the performance of the existing approaches for assessing voice quality. Reference acoustic databases allow the standardization of acoustic analysis, benchmarking and comparing the performance of different voice analysis techniques. They also allow to differentiate normal voice and pathological voice, to evaluate and monitor it clinically, and to diminish the subjectivity that underlies the acoustic‐perceptual analysis by establishing a correlation between quantitative data. Results can be interpreted reliably, as long as they are collected by the same equipment, and the same data collection methods and recording techniques are used. However, the reliability of acoustic analysis of the voice signal is still hindered by the “scarcity of sufficiently comprehensive databases”. Ī database of normal and pathological voices is a reference for the identification of clinically relevant perturbations in voice quality and data collection and analysis suitability developed for specific applications. The most widely used clinical graphical and numerical representation of normal and pathological voices is the Multidimensional Voice Program (MDVP), and even when the acoustic analysis of voice is performed with freeware, reference values from the MDVP can be found in the manuals. However, these values should be used with great caution because they are based only in 15 normal voices and “may not be appropriate for various age‐sex subpopulations. At this time, the MDVP normative values should be regarded as preliminary and not as commonly recognized criteria by which abnormality is established. However, the concept of an integral database is important”. There have been various scientific studies along the past 40 years that compare, acoustically, normal and disordered voices.
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