@ISSD2022 - I believe this can be done today. Sound Recognition is a valid Automation trigger in the Shortcuts app (for a 'Personal Automation'), which can run any Shortcut, including 3rd Party Shortcuts and those that manipulate HomeKit devices. The problem is doing the opposite -- using a HomeKit trigger (motion detected, temperature triggers, etc) cannot run any 3rd Party Shortcuts.
Incidentally, if you do want to run a 3rd Party Shortcut in response to a HomeKit event, I have added this capability to Signals for HomeKit on the Mac 👍
Topic:
App & System Services
SubTopic:
Core OS
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