Important characteristics of ultrasound systems
- Ultrasound systems consist of one or more speakers placed inconspicuously on a building or other structure to protect it in its entirety.
- Though humans cannot hear it, birds perceive the sound as physical pressure - intensely irritating, but not painful or dangerous.
- Acoustic pressure systems are suitable for low to medium populations of birds.
- For the professional use, there are various ultrasound devices with differing effective radiuses. Acoustic pressure systems are quite small and can be hidden well on a building.