Abstract

The human-animal conflict has been increasing day by day worldwide. This conflict gets turned into wild life menace at several times. As per survey, Monkey has been found attacking for want of food and other eatables. Based on research and survey, it was established that monkeys can hear sounds from 20Hz to 40KHz. Human can hear in between 20Hz to 20 KHz. Taking this advantage, the research article is focused for generation of noise beyond hearing range i.e. beyond 20 KHz but less than 40 KHz to develop silent electronic system. At the same time noise is heard by deterring animal such as monkey. This paper proposed a silent electronic system, which emits sound in between 25 KHz to 40 KHz at safe SPL (sound pressure level) to deter monkeys. Proposed sound spectrum is not audible to human, but monkeys can hear it very well. This spectrum is known as ultrasonic frequency sound. Proposed work is to create ultrasonic noise at safe level of monkey hearing, which can annoy or create hostile environment to only monkeys. An ultrasonic frequency generation (software based) electronic system has been designed and developed to control monkey menace. Safe SPL (sound power level) at 115dB is used. The emission frequency used is 25 KHz to 40 KHz in burst format. The system is versatile, with change in program it can target deterring any animal or wildlife applications.