Frequency is something we need in daily life. So, one day I thought of using frequency to prevent something I was really worrying about. The problem was mosquitos. So I designed a simple mosquito repellent system using frequency. You can read the full article about it here.
After finishing the project, I did further research on how we can use frequency to repel animals. Here is what I did learn on the topic.
Using frequencies is just like using sound to repel animals. Actually sound also can be categorised as frequency. The biggest difference between the ultrasonic frequency and the sound wave is that ultrasonic waves work at a frequency above 20 kHz and they can not be heard by a human ear. Sound repellents emit sound waves at a frequency between 20 Hz and 20 kHz, within the normal hearing range for humans.
So, most people cannot hear ultrasonic sounds. The normal hearing range for an adult person is between 20 Hz and 20 kHz. Ultrasonic sounds are sound waves above 20 kHz, which are not perceived by most people. However, children and young people tend to have a higher hearing capacity than adults and can perceive sounds at higher frequencies.
What kind of animals we can use frequency-based repellent systems :
Mainly ultrasonic revellers are effective in repelling cats, rats, mice, squirrels, rabbits, martens, ferrets etc. Most animals can detect very high frequencies, ultrasonic sounds that are imperceptible to the human ear. Their auditory system is crucial to their survival instinct. Typically, these animals detect the threat of predators by hearing them before seeing them. Ultrasonic signals affect their environment, feeding habits, communication, relationships, and sense of direction. Animals change their territory.
conclusion:
So, we can clearly state that the ultrasonic frequency-based repellent systems have several advantages as well cons. But in conclusion, This is a more environmentally friendly way of repelling animals. repelling animals is always way better than killing them.
We will talk about more of this topic in the upcoming articles.