Inexpensive Ear Protection - Innovation Project.pptx

my school presentation

1. Inexpensive Ear Protection INNOVATION SCIENCE PROJECT Azmeeha Mobin , Mohidul Islam Mishat , Nafiz Uddin, Nafisa Tabassum , Rubaiyat Touhid

2. Our Ear

3. What’s Inside?

4. Outer Ear Pinna Auditory Canal

5. Middle Ear Ear drum Hammer Anvil Stirrup

6. Inner Ear Cochlea Auditory Nerve

7. How does it work?

8. Sound Pollution Generally defined as any type of excessively loud or disturbing noise that disrupts a person’s life.

9. Causes in Bangladesh Traffic Sounds Caused by vehicles and their horns Loud noise Produced by loud music, speakers, etc Industrial Area For example, factories, construction sites, etc

10. Effects faced Hearing damage Due to loud noises, a person may lose their hearing strength Psychological Disturbance A person may feel very stressed out. Cardiovascular Disease Heart diseases can also occur, and may lead to death.

11. Our model

12. Overview When a sound wave above 45 dB is travelling through the structure, it gets reduced to a safer level. As the sound wave passes through each layer of dense rubber , it gets reduced. At one stage, the wave enters a vacuum chamber where the sound is reduced as much as possible. The resulted noise which reaches the ear is now much safer than it was before.

13. Materials

14. Materials Vaccum Chamber

15. Materials Rubber Body

16. Materials Plastic barrier

17. Plugging it in

18. Pros & Cons CHEAP Made with cheap materials EFFECTIVE Reduces noise as much possible AVAILIBILE Anyone can use it COMFORTABLE No ear strain/ache VACUUM The chamber must be strong NOT COMPLETELY AIRTIGHT A small portion remains open to sound

19. Thank you !