Extraction of auditory features and elicitation of attributes for the assessment of multi-channel reproduced sound

The identification of relevant auditory attributes is pivotal in sound quality evaluation. Two fundamentally different psychometric methods were employed to uncover perceptually relevant auditory features of multi-channel reproduced sound. In the first method, called Repertory Grid Technique (RGT), subjects were asked to directly assign verbal labels to the features when encountering them, and to subsequently rate the sounds on the scales thus obtained. The second method requires the subjects to consistently identify the perceptually relevant features before assigning them a verbal label. Under sufficient consistency, a lattice representation -- as frequently used in Formal Concept Analysis (FCA) -- can be derived to depict the structure of auditory features.