Targeted Acoustic Startle Technology
Genuswave's Targeted Acoustic Startle Technology produces a startle sound that triggers an uncontrollable reflex, causing the seal to stop foraging and flee from the sound source. Repeated exposure leads to sensitization, meaning that the seals' responsiveness to the sound increases over time and the seal learns to avoid the protected area. Once the seal leaves the confined protected area the sound levels will be too low to trigger the reflex and the seals are unaffected.
The startle response is found in virtually all mammals in which it has been looked for. The short latency (< 10ms) of the reaction is due in part to being processed by the spinal cord/brainstem directly.
Loud Noises are Not Effective
While it is certainly possible to construct an acoustic-based deterrent system based on crude, 'broad-spectrum' loud noises, this approach has several critical biological drawbacks including: