AES E-Library links that details some aspects of what MQA could solve.
A Hierarchical Approach to Archiving and Distribution
AES E-Library » A Hierarchical Approach to Archiving and Distribution
The Audibility of Typical Digital Audio Filters in a High-Fidelity Playback System
AES E-Library » The Audibility of Typical Digital Audio Filters in a High-Fidelity Playback System