Although controlled in a similar manner to a theremin , it should not be confused with one .
The D - Beam Controller is a Roland Synthesizers interface that controls sound and effects via hand movements interacting with an infrared beam of light .
Although controlled in a similar manner to a theremin , D - Beam Controller should not be confused with one .
The D - Beam Controller is a Roland Synthesizers interface that controls sound and effects via hand movements interacting with an infrared beam of light .