As anyone with an interest in audio products knows, manufacturers always provide a spec sheet with measurements of various parameters, which most savvy consumers know to take with a grain of salt. And presumably unbiased reviewers often take their own measurements and publish the results with their reviews.
But how are those measurements, which use test signals, related to the sound quality of a given product playing music? I've certainly observed that poor measurements do not necessarily mean poor subjective performance, and that good measurements do not necessarily reflect good performance. On the other hand, measurements sometimes support—and even explain—a reviewer's subjective impressions.
Do you think that objective measurements of an audio product using test signals correlate with the subjective sound quality of that product playing music? If so, how strong is that correlation? On what do you base your position?