If you use the language assistant "OK Google" on your Samsung Galaxy S8, then it can happen that you do not receive acoustic feedback by a sound or sound according to the statement of the command.
This can be annoying under certain circumstances and that's why we'll explain here how to work around the problem in most cases:
1. To do this, please open Settings
2. On your Samsung Galaxy S8. Navigate to Button Access
3. Activate the option "Button Access" Alternatively: enter Button Access in the search bar of the options.
This will cause the OK Google command to be acknowledged as usual with an acoustic sound on your Samsung Galaxy S8.