Degradation mean opinion scores quantify how much processing has harmed a signal

Evidence

Listeners use the DCR rating scale (see Table 7.2) to evaluate the extent to which the processing has degraded the signal when comparing the processed version with the unprocessed original. The results are analyzed in the same way as for the ACR test, and these are sometimes referred to as the degradation mean opinion score (DMOS). — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2394

Categorization

• DEFINE: Names DMOS and its derivation from DCR ratings of processed versus original audio.
• XREF: connects to: DCR tests measure how much processing degrades an audio signal — David Howard, Jamie Angus, coustics and Psychoacoustics, 2372