Albert: A System for Interactive Analysis and Display of Voice Source and Acoustic Parameters

A number of systems have been reported in the scienti c literature that are designed to provide voice users with visual feedback to help them develop some aspect of their vocal ability.These systems tend to be based on the derivation of a very small selection of vocal parameters.For example. a number of systems provide feedback on a measurement of the fundamental frequency of the voice alone.However, ac curate monitoring and subsequent feedback of the majority of vocal acts requires the consideration of a number of voice source parameters in combination with a number of parameters derived from analysis of the acoustic output of the subject.This paper discusses a computer program for real-time visual feedback of vocal performance.The software, called ALBERT (Acoustic and Laryngeal Biofeedback Enhancement in Real-Time), provides algorithmically con gurable, interactive analysis and subsequent visual feedback of voice source and acoustic output characteristics.Primary parameters of the voice source and acoustic output of the subject are derived from microphone and electrolaryngograph outputs.Further parameters are calculated from user-de ned algorithms which operate on the primary parameters.Real time visual feedback is supported through a user-con gurable selection of one, two, and three dimensional graphs.The user is also able to employ colour schemes for enhancing the visual presentation of information.