We owe a big thanks to YouTube user dreamyandseedy! This is a playlist of field recordings made in New York City in summer 2023 using a custom made large-aperture stereo Lite2Sound device from Rare Waves LLC. This is true field recording in the medium of modulated light. All of the sounds come from the lights in the scene. No microphones, synthesizers or audio post-processing were used.
These videos are evidence that a secret layer of sound is being emitted by the artificial lights of civilization. What you perceive of it through a Lite2Sound photodiode amplfier depends on location, motion, distance and your place in time.
We would be glad to discuss building a custom device for you with this level of sensitivity and audio quality. Please get in touch with the developer through rarewaves.net for more information.