Use Directional Speakers in Museums and Galleries

https://www.audflyspeaker.com/use-directional-speakers-in-museums-and-galleries.html

1. What is a directional speaker?

A directional speaker is a directional audio ultrasonic speaker that plays a straight beam of sound so it can only be heard when you are in a specific place. They are used in many different places where sound needs to be localized to a specific place. For example, public address, retail display, interactive kiosk or art exhibit.