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Noise Pollution Effects & Control
- 1. NOISE POLLUTION PREPARED BY: DONNA ELPUZ MARY ROSE LAGRAMA
- 2. I. NATURE OF SOUND II. CLASSIFICATION OF NOISE POLLUTION III. SOURCES OF NOISE POLLUTION IV. EFFECTS OF NOISE POLLUTION V. NOISE CONTROL
- 3. Sound - a wave phenomenon propagated through an elastic medium & is capable of exciting the auditory nerve. - This medium could be of solid, liquid or gaseous material. Noise - Sound that is unwanted or disrupts one’s quality of life Noise Pollution - A form and level of environmental sound that is generally considered likely to annoy, distract or even harm other people. I. NATURE OF SOUND
- 6. Physical Damage 140 Multiengine jet at 30 meters Pain Threshold 130 Very loud disco Maximum vocal effort 120 Jet plane, 35m from takeoff 110 Motorcycle accelerating Thunderclap Very loud 100 jackhammer Hearing impairment if noise is continuous 90 Heavy city traffic Diesel truck 70 Television Noise interferes with speech 60 Normal conversation Quiet 50 Average home volume 40 Library Very Quiet 30 20 Broadcasting studio Barely audible 10
- 7. II. CLASSIFICATIONS OF NOISE POLLUTION: A. COMMUNITY NOISE/ ENVIRONMENTAL NOISE - “non-industrial noise pollution” - also called “environmental noise”, “residential noise” or “domestic noise” - Defined as noise emitted from all sources, except at the industrial workplace
- 9. B. OCCUPATIONAL NOISE - “industrial noise pollution” - The many & varied sources of noise is industrial machinery & processes include: rotors, gears, turbulent fluid flow, impact processes, electrical machines, internal combustion engines, pneumatic equipment, drilling, crushing, blasting, pumps & compressors. Furthermore, the emitted sounds are reflected from floors, ceiling & equipment.
- 11. III. SOURCES OF NOISE POLLUTION ROAD TRAFFIC NOISE
- 12. AIR CRAFT NOISE NOISE FROM RAILROAD S
- 14. NOISE IN BUILDING
- 15. NOISE IN CONSUMERS PRODUCT
- 16. LOUD SPEAKERS
- 17. FIRE CRACKERS
- 18. IV. EFFECTS OF NOISE POLLUTION Cause hearing loss Annoy & interfere with speech Disturb sleep Cause fatigue & aggression Reduce immune response Lead to heart disease
- 19. HOW YOUR BODY REACTS: In response to excessive noise, your autonomic nervous system attempts to adjust body functions by increasing a person’s heart rate, raising blood pressure & releasing the hormones adrenalin & cortisol. However, prolonged high level of adrenalin & cortisol under stressful working may lead to more serious health effects, including: •Raised blood pressure •Accelerated heart rate •Stress, which can lead to irritability & headaches •Hypertension increasing the risk of strokes & heart attacks •Reduced white blood cell & immune response Gastric ulcers
- 20. HIGH NOISE LEVELS – high levels of noise may initially cause dull hearing & ringing in the ears. Regular high level noise exposures will lead to loss of hearing & other adverse health effects. LOW LEVEL NOISE – low levels of noise can interfere with activities or concentration & causes similar stress & health effects as high level noise.
- 21. V. NOISE CONTROL Suggestions to prevent or control noise: •Block reception from the unwanted sound by using ear plugs. •Sound proofing rooms to prevent excessive noise from coming in •Prevent noise at the source by redesigning the source. For example, an engine can be made more quiet by installing cushions or mufflers.
- 23. CONCLUSION: Based on our study, we can conclude that even in our homeland, there are various sources of noise pollution. People, or we sometimes do not notice that we are making the worst mistake of our lives, spoiling what is an universal in heritage. I believe that all of us can contribute to improve our environment. Let’s live a legacy to leave for future generations. Let’s minimize noise. Let’s make change for the better.