Summary:
- This article discusses a new technology called Phacelle, which is a type of directional noise that can be produced cheaply.
- Phacelle is a way to create noise that can be directed in a specific direction, which could have applications in things like sound systems or noise-cancelling technology.
- The article explains that Phacelle is a promising new technology that could be used to improve various products and devices by controlling the direction of sound waves.