I went to myNoise.net, let the generator load, then clicked "play," but nothing happened. I enabled autoplay and tried again, but still got no sound. I enabled compatibility mode and it still did not play sound. I opened YouTube to make sure sound was playing through the browser elsewhere, and it was. I also went to both Safari and Firefox with the same myNoise generator loaded and it played without trouble in both.
The problem doesn't seem to be with the site sound permissions, because I am able to autoplay sound previews, but when I try to load a generator it won't play anything at all, even though the audio icon appears in the browser tab.

I wanted to load a generator on myNoise and have the audio play.
0.99.135.0.1-beta (WebKit 622.1.15.19.2)
Sequoia (15)