PESQ works as a signal-difference device rather than a true auditory model

Evidence

The PESQ method includes processing steps such as automatic compensation of the dynamically varying jitter prior to the auditory model, and other similar steps, which are designed to directly overcome the problems that existed with the PSQM. Many of the features do not stem directly from the neural structure of the auditory system, although they are motivated perceptually. PESQ can be characterized as a signal difference measurement device, which has some features stemming from the human auditory system. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 2446

Categorization

• DEFINE: Clarifies the key distinction between objective signal-difference measurement and genuine perceptual/neural modeling — the engineering pragmatism behind PESQ.