Just to be clear, there is no valid reason for AudioContext to leak audio latency information without the user's permission. It is used almost exclusively for a

Just to be clear, there is no valid reason for AudioContext to leak audio latency information without the user's permission. It is used almost exclusively for ad tracking and fingerprinting. On sites that do not ever play audio, the browser leaks sensitive highly personalized audio information to any ad network that wants it. That's not a 'feature', it's a spyware backdoor for ad networks.