AECH 1100 Topic 7

Noise Pollution

happens when the sound coming from planes, industry or other sources reaches harmful levels

Effects of Noise Pollution

• Underwater noise pollution coming from ships has been shown to upset whales’ navigation systems and kill other species that depend on the natural underwater world

• Noise also makes wild species communicate louder, which can shorten their lifespan — not that different from making people scream to be heard their whole lives

• Research has shown that there are direct links between noise and health, including stress-related illnesses, high blood pressure, speech interference, hearing loss

Characteristics of Noise

• Sound pressure

• Frequency

• Frequency

• Time of the day

• Location

• Intermittency

Kinds of Noise

• Continuous

• Variable or Intermittent

• Impulse or Impact

• Kinds of noise which affect analysis

• Chemical Noise

• Instrumental Noise

Natural Causes of Noise Pollution

The environment is fill-up by different loud like shining towards cyclone volcanic eruption be earthquakes and slides loud created with some animals and immediate water falling.

Human Causes of Noise Pollution

Some of its major causes are vehicles, aircraft, industrial machines, loudspeakers, crackers, etc. When used at high volume, some other appliances also contribute to noise pollution, like television, transistor, radio, etc.

Decibel Chart

Transportation Noise

• Vehicle horn, noise from silencer of a bike, etc

• Road Traffic, Aircraft, Rail, etc

Construction Noise

• Construction of buildings, highways, and streets.

• Bulldozers, digging machines, etc

Industrial Noise

• Loud speakers, plumbing, boilers, generators.

• air conditioners, fans, and vacuum cleaners.

Household Noise

• Food Mixer, Grinder

• Vacuum Cleaner

• Washing machine and Dryer

Decibel

Is a logarithmic unit used to express the ratio between two values of a physical quantity, often power or intensity

Decibel of a Typical Conversation

60 dB – not loud enough to cause damage

Decibel of