What is historicalaudiod?

historicalaudiod is a recent addition to macOS that you might spot in Activity Monitor.

What is historicalaudiod?

historicalaudiod tracks audio usage data on your Mac. It records which audio devices were used, volume levels, listening times, and how sound was routed. This data supports features like automatic device switching and Hearing Health.

What features use it?

• Hearing Health: tracks headphone volume over time and warns you about loud sounds (shown in the Health app on iPhone, synced from your Mac)
• Automatic device switching: learns which audio device you prefer in different situations
• Audio troubleshooting: keeps a record of audio device connections and disconnections

Does it record my audio?

No. historicalaudiod tracks data about audio usage, such as volume levels, device types, and how long you listened. It does not record conversations, music, or any sound you play or capture.

Does it use a lot of resources?

No. It logs audio data in the background and uses very little CPU and memory.

Should you worry?

No. It is a standard macOS process that supports audio health and convenience features. The data it collects is about your audio devices and listening levels, not your audio content.

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