https://www.musical-u.com/learn/can-you-learn-perfect-pitch-a-new-scientific-study-aims-to-find-out/
There are few topics in ear training more contentious and misunderstood than “perfect pitch”. A new scientific study aims to explore more fully: whether or not perfect pitch is an “all or nothing” skill, and what level of skill people who train their ears for perfect pitch can achieve. https://www.musical-u.com/learn/can-you-learn-perfect-pitch-a-new-scientific-study-aims-to-find-out/