Samsung designed the Galaxy Buds as a wireless audio companion for devices such as the Galaxy S10s. However, they have recently improved in this capacity through a new software update. It allows the user to operate them using Bixby alone if they choose.
https://www.notebookcheck.net/Samsung-Galaxy-Buds-get-activated-with-Bixby-voice-control-other-new-features.418139.0.html