@petemeister Here’s a response from our team:
To give you an explanation of what is happening here:
1. The “Ding-Dong” Sound (Connection Alerts) The sound you are describing is the system’s default notification for a successful status change or connection event.
- USB: When you connect to a computer with debugging enabled, the phone plays this sound to alert you that a data connection (ADB) has been established. This is a security feature to ensure you know a data link is active.
- Bluetooth: This is where the inconsistency comes from. The sound is typically triggered when a device connects via a specific profile (like HFP/Hands-Free for your car or Headset profile). However, simple A2DP (Media Audio) connections often connect silently or handle the tone on the speaker itself, not the phone. This protocol difference is likely why your home speakers remain silent while your car (which acts like a headset) triggers the chime.
2. The “Mystery Sound”
- If you are hearing this sound randomly without an obvious trigger, it is very likely a brief connection/disconnection event occurring in the background. For example, if your phone momentarily loses and regains connection to a known Bluetooth device, or if a charging cable has a loose contact, the system might play that same “Ding-Dong” to announce the reconnection.
- It also comes from third party apps - we do not have notifications tray, so that can happen.
- It also comes from unrecognized and unsupported group messages (in older Mudita OS K versions).
3. Your Suggestion (“All or Nothing”) You make an excellent point about consistency. Currently, MuditaOS separates “Charging Sounds” (which can be toggled in Settings > Sound > Advanced) from these system-level connection alerts, which do not have a user-facing toggle.
We agree that this behavior should be uniform—either always alerting or respecting a “System Sounds” toggle. We have logged your feedback as a feature request for our design team to review: specifically, to standardize connection sounds and give users the option to disable them entirely.