Transmitter and position information management system

A position information management system comprising:

• a transmitter configured to output a plurality of sound waves in a plurality of different directions;
• and
• a management apparatus that is capable of communicating with the transmitter via a network;
• wherein the transmitter includes
• a first memory storing a first program;
• and
• a first processor configured to execute the first program to implement processes of
• outputting a first sound wave including first unique information in a first output direction of the plurality of different directions;
• outputting a second sound wave including second unique information that differs from the first unique information in a second output direction that differs from the first output direction;
• and
• individually controlling the first sound wave output by a first sound wave output unit and the second sound wave output by a second sound wave output unit based on a request from the management apparatus;
• and
• wherein the management apparatus includes
• a second memory storing a second program;
• and
• a second processor configured to execute the second program to implement a process of managing information relating to an installation position of the transmitter, and information relating to the first output direction of the first sound wave output by the first sound wave output unit and the second output direction of the second sound wave output by the second sound wave output unit.