Unnatural silence in New Pokemon Snap

I have since fixed this issue, and all of my audio is now working as I expect it to. Reinstalling the software was the solution, specifically following these steps:

  1. From the Switch Home Menu, press + to open the New Pokemon Snap software options
  2. Go to Manage Software and select Archive Software
  3. After it is archived, the icon should still be visible
  4. Enter the options again by pressing +
  5. Go to Software Update and select Re-Download Software