Google finally takes seriously the blocking of annoying automatic playback videos that start with the sound at full volume. The next update to Chrome (version 66) will include changes to the autoplay videos, which means that the browser will only play them automatically if the sound does not play by default, or if you click and interact with the site, or if previously "showed an interest in the media on the site".
These changes were originally scheduled for Chrome 64, which arrived in January with the option to permanently mute the annoying websites that abuse the autoplay videos with the sound turned on by default. Google delayed the additional automatic changes in Chrome 66, but now they're showing up on Chrome's beta channels before a public release next month. Additional Google steps will mean that autoplay videos with sound from your speakers should be a thing of the past, and you can always take the additional step of completely mute a site if you click and interact and the sound is activated.