Abstract: A distribution system includes a device control circuit that receives a first sound signal and a second sound signal that are related to a performance sound to be distributed. The device control circuit also receives meta-data indicating a type of the first sound signal and a type of the second sound signal. The device control circuit also receives sound environment data indicating a sound characteristic of a sound appliance. Based on a combination of the type of the first sound signal and the sound characteristic or a combination of the type of the second sound signal and the sound characteristic, the device control circuit controls the first sound signal or the second sound signal to be output to the sound appliance.

Abstract: A laser theodolite is provided which comprises a telescope (6), a focusing lens (10) and a reticle (12) provided in the telescope, a polarization beam splitter (13') provided on an optical axis (O) between the focusing lens and the reticle for reflecting a laser beam (S1) in a direction of collimation, and a laser-beam light source portion (16) for emitting the laser light toward the polarization beam splitter (13'). The laser-beam light source portion (16) and the reticle (12) are conjugate with respect to the polarization beam splitter (13').