SUBJECTIVE AND OBJECTIVE SPEECH INTELLIGIBILITY MEASURES
HJM STEENEKEN, Tammo Houtgast · 2024
Assessment methods for speech communication systems can be divided into three groups: (1) subjective intelligibility measures focused on phonemes.words or sentences.12) subjective quality measures related to a global impression, and [3) objective measures based on physical aspects of the speech signal or the speech transmission path.' ad 1.Several methods will be discussed for the subjective evaluation of speech transmission systems, especially concerning the scoring method fopen or closed response, scaling), the type of speech material (short nonsense words, rhyme words.phonemes or sentences).and the experimental design.ad 2. Quality rating is a more global method initially developed for assessment ot systems perform~ ing at a fair-to-high quality level.The relevance of this type of test is discussed in relation to intelligibility measures.ad 3. Objective methods. in which the transmission quality is derived from physical parameters.oiler additional to the prediction of intelligibility also useful diagnostic information.