This is a method used by some animals, bats for example, that uses sound waves to locate prey and other objects in the dark

I think it's called echolocation or bio sonar... hope this helped

The rate that would change would be the  searching efficiency/attack rate. there are only two other rates in this model: the  growth rate of prey, and the  predator or consumer mortality rate.the  searching efficiency/attack rate is what indicates how effectively can a predator capture its prey whether in the searching process or actual capturing/attacking process.