[Objective criteria for the evaluation of the vocal function].
In search of an objective method for the evaluation of vocal function it was investigated, whether there exists a relationship between the capability of kinesthetic phonatory control, i.e. the operational efficiency of the neuromuscular phonatory control system, and the quality of vocal function. In three groups of subjects with different quality of vocal function (singers, normal subjects and dysphonic patients) pitch and intensity changes of the speaking and singing voice during interruption of auditory feedback (by means of binaural maskings) were measured by means of fundamental frequency analysis. Results showed a much better kinesthetic control ability in singers than in normals and especially in dysphonic patients thus revealing, that the measurement of this ability can be used for evaluating individual vocal function objectively. The main evaluation criteria are: the degree of vocal pitch elevation while speaking under masking conditions, the accuracy of the singing voice without auditory control and the width of pitch perturbations of a sustained voice.
D006801:Humans; D007699:Kinesthesis; D007830:Larynx / Q000502:physiology*; D010897:Pitch Discrimination; D014831:Voice
Objektive Beurteilungskriterien für die Qualität der Stimmfunktion.