Reports on Progress:
Experimental designTypical user interface used during listening tests
It was decided to use a double-blind multi-stimulus test method with hidden reference and hidden anchors (MUSHRA) as a basis for experimental design. The main reason of this choice was suitability for assessment of medium and large impairments (the quality of most of processed items used in experiments was degraded quite considerably). Moreover, MUSHRA test allows for quick comparison and assessment of large number of stimuli which is beneficial in terms of duration of a listening test.