ABSTRACT
At their core, virtually all endeavors in audio engineering share the same goal: To provide optimal sound quality for the conditions. Similarly, formally or not, every audio engineer listens to the audio signal to determine of it meets the design criteria. After the complexities of development and design, the verification of sound quality may appear to be a relatively slight task. But, of course, the problem is far from trivial. In fact, it is difficult to define sound quality and more difficult still to assess it.
