Traditional speech training methods can prove cumbersome because of the difficulty of providing the subject with good feedback, maintaining her/his motivation over long periods and stabilising the improvement in articulation. In this work we provide visual feedback based on displaying a trajectory in a 2Dimensional `phonetic space'. Data are presented from a small-scale efficacy study, which illustrate the use of OLT in speech therapy for misarticulated sibilant fricatives. Results for the contrasting articulations are compared and the potential of OLT as a therapeutic technique is discussed. 1. INTRODUCTION Today's Computer-Based-Speech-Training (CBST) systems provide feedback in various aspects of speech production such as voicing, intonation, and articulation with a number of different techniques. Although the feedback provided in various speech parameters of voicing such as timing, loudness and pitch is adequate, there are several limitations in the development and practice of art...

Traditional speech training methods can prove cumbersome because of the difficulty of providing the subject with good feedback, maintaining her/his motivation over long periods and stabilising the improvement in articulation. In this work we provide visual feedback based on displaying a trajectory in a 2Dimensional `phonetic space'. Data are presented from a small-scale efficacy study, which illustrate the use of OLT in speech therapy for misarticulated sibilant fricatives. Results for the contrasting articulations are compared and the potential of OLT as a therapeutic technique is discussed. 1. INTRODUCTION Today's Computer-Based-Speech-Training (CBST) systems provide feedback in various aspects of speech production such as voicing, intonation, and articulation with a number of different techniques. Although the feedback provided in various speech parameters of voicing such as timing, loudness and pitch is adequate, there are several limitations in the development and practice of art...

Traditional speech training methods can prove cumbersome because of the difficulty of providing the subject with good feedback, maintaining her/his motivation over long periods and stabilising the improvement in articulation. In this work we provide visual feedback based on displaying a trajectory in a 2-Dimensional ‘phonetic space’. Data are presented from a small-scale efficacy study, which illustrate the use of OLT in speech therapy for misarticulated sibilant fricatives. Results for the contrasting articulations are compared and the potential of OLT as a therapeutic technique is discussed. 1.