Sound Pollution Control Machine - Science Exhibition Model Report Post Violent or repulsive content Harassment or bullying Spam or misleading Infringes my rights Captions issue Violent or repulsive content Hateful or abusive content Others 2021, Feb, 19 justLearning Edit Team - Justlearning Edit Team Science Innovations and Ideas 1 1 0 1097 Hello world Sound pollution leads to harmful effects on humans, animals, birds and sea creatures. Noise reduction systems help to absorb the sound vibrations and maintain a calmer atmosphere around. Watch the video to know more.