Unable to use Audio Context because it's being blocked.

[ghost]

Description

Audio Context not working when not being used for fingerprinting.

Steps to Reproduce

Use audio context.

example, per @davidmurdoch (taken from post below)

const ctx = new AudioContext();
const audioSrc = ctx.createMediaElementSource(document.getElementById('a-video-element'));
const analyser = ctx.createAnalyser();
const frequencyData = new Uint8Array(analyser.frequencyBinCount);
audioSrc.connect(analyser);
audioSrc.connect(ctx.destination);
analyser.getByteFrequencyData(frequencyData); // blocked

Actual result:

Visualization doesn't show up as audio context is being blocked.

Expected result:

Visualization shows up.

Reproduces how often:

Easily reproduced

Brave version (brave://version info)

Brave: 0.64.77 Chromium: 74.0.3729.169 (Official Build) (64-bit)
Revision: 78e4f8db3ce38f6c26cf56eed7ae9b331fc67ada-refs/branch-heads/3729@{#1013}
OS: Windows 10 OS Build 17134.765

[rebron]

@coolmax10 We need more info on this issue and some reproducible steps.

[bsclifton]

Closing as there are not steps and OP account has been deleted

[davidmurdoch]

Here is a reproduction:

const ctx = new AudioContext();
const audioSrc = ctx.createMediaElementSource(document.getElementById('a-video-element'));
const analyser = ctx.createAnalyser();
const frequencyData = new Uint8Array(analyser.frequencyBinCount);
audioSrc.connect(analyser);
audioSrc.connect(ctx.destination);
analyser.getByteFrequencyData(frequencyData); // blocked

[bsclifton]

Thanks for the steps, @davidmurdoch - I'll re-open here and edit the original comment above with your steps