If any audio on a Web page plays automatically for more than 3 seconds, either a mechanism is available to pause or stop the audio, or a mechanism is available to control audio volume independently from the overall system volume level.
Provide a mechanism to stop, pause, or control the volume of audio that plays automatically.
Helps users who have difficulty focusing with background audio.
Check that there is a mechanism to stop, pause or mute audio that plays automatically for more than 3 seconds.
It's always better for accessibility if audio doesn't play automatically.