The Lumanoise v3 have 2 sawtooth oscillator: SAW1 for bass frequencies, SAW2 for the high frequency and a white noise generator.
It is possible to connect an external LDR or a variable resistor.
The Lumanoise v4 have 4 trautonium like sub oscillator,
it is possible to connect an external LDR or a variable resistor.
The Lumanoise v5 have a white noise generator, an external mono audio, if you connect the small solar panel to the audio input, you can amplified the sound the solar panel produce with different type of light, solar panel is sensible to a wild range of light frequencies, while LDR is sensible only to the intensity of light.