One way I could see this working is with old bulbs - when you’re near the threshold for it flickering, perhaps sound can modulate the light.
Or perhaps the contacts need to be realistically cruddy and intermittent, and the long glass tube acts as a sounding body to trigger an intermittent contact, encoding sound into light.
One way I could see this working is with old bulbs - when you’re near the threshold for it flickering, perhaps sound can modulate the light.
Or perhaps the contacts need to be realistically cruddy and intermittent, and the long glass tube acts as a sounding body to trigger an intermittent contact, encoding sound into light.