MQA again
THIS ISSUE: MQA surfaces. MQA has once again floated to the surface of the perfectionist-audio pond—not belly-up as some have hoped but forced there by relentless pursuit by anti-MQA predators posing as impartial jellyfish. In case you’ve been living amidst the seaweed at the bottom of the pond, MQA is a thing that’s done to digital audio data—sort of a codec that is said to reduce the “blurring” repeated digital conversions cause. For high-resolution audio, MQA compresses data into a much smaller file or stream while retaining, it is said, the sonic benefits of the original high-rez audio (and also of “deblurring”). MQA appears to be genuinely clever and legitimately new, implementing post-Shannon developments in sampling theory that have not previously been applied to digital audio.1 MQA is controversial, for good reasons. In…