| Notes |
- This watcher will call the callback when various audio device related events occur (e.g. an audio device appears/disappears, a system default audio device setting changes, etc)
- To watch for changes within an audio device, see
hs.audiodevice:newWatcher()
- The callback function argument is a string which may be one of the following strings, but might also be a different string entirely:
- dIn - Default audio input device setting changed (Note that there is a space character after
dIn, because these values always have to be four characters long)
- dOut - Default audio output device setting changed
- sOut - Default system audio output setting changed (i.e. the device that system sound effects use. This may also be triggered by dOut, depending on the user's settings)
- dev# - An audio device appeared or disappeared
- The callback will be called for each individual audio device event received from the OS, so you may receive multiple events for a single physical action (e.g. unplugging the default audio device will cause
dOut and dev# events, and possibly sOut too)
- Passing nil will cause the watcher to stop if it is already running
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