Lite2Sound Photodiode Field Recordings

Lightscape at the San Antonio Botanical Garden was a fun exhibit, we had a good time, and for the nice folks who asked what we were doing with the strange recording equipment, here it is.

We are demonstrating the Lite2Sound™ QB Stereo device from Rare Waves LLC.  It captures modulated light from the scene as audio.  The audio soundtrack is a recording of fluctuations in light intensity that were captured by a pair of photodiode amplifiers in the Lite2Sound device.  The audio is dry, it has not been given any special effects or sound processing.

It might be said that this device picks up a hidden layer of reality that has many ambient sounds and frequencies.

Just pointing it out the window and cruising the road, sometimes the city broadcasts its own relaxing ambient music.

This video explains the camera and audio setup that was used to make the Lite2Sound Photodiode Field Recordings videos.

To make the video, we mounted our Lite2Sound QB Stereo and a miniDVD camcorder on a bar, and connected the Rec output of Lite2Sound to the camcorder’s Mic In with a stereo aux cable.  The camcorder’s automatic gain control is active, that is why the noise …

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Lite2Sound QB Stereo

Its new for 2021! Lite2Sound™ QB Stereo is a unique tool for sound designers, artists, and field recordists. In response to many requests for a stereo version, Rare Waves LLC is proud to announce the upcoming availability of Lite2Sound QB Stereo. It features 2 sensor channels that create a stereo field for listening to ambient modulated light, built-in speakers and battery power for wire-free portability, 2 stereo audio outputs on 3.5 mm mini plug, and a strong and beautiful case made of solid hardwood and phenolic composite. Available through

Lite2Sound is a trademark of Rare Waves®…

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Field recording in NYC at night

This video is a field recording of modulated light, captured out the window of a car while driving in New York City. The photodiode amplifier was similar to Lite2Sound PX, and it was mounted inside the body of a junk 8mm film camera. Inside the camera, a photodiode is mounted where the film once was, and the shutter is removed. This enhances the performance of the photodiode amplifier by giving it extended range to pick up interesting sound sources easily from a distance. Its audio output was sent to the mic input of a DVD camcorder for simultaneous capture of video and optical sound.…

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DIY kits available now

Lite2Sound PX is an easy-to-build DIY kit that lets you explore the sounds of modulated light. Its a great addition to your toolbox for making field recordings, gathering source material for sound design, and just ambient listening for the joy of discovery. Its available from for USD$49 (kit) or $74 (pre-assembled). Link

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