Noise refers to any unwanted or disruptive sound that interferes with normal activities such as communication, work, or relaxation. It can range from mild nuisances to harmful disturbances, depending on its intensity, duration, and impact.

Types of Noise

1. Based on the Source

Industrial Noise: Originates from machinery or processes in factories and construction sites. Examples: Drilling machines, conveyor belts.

Environmental Noise: Comes from outdoor environments or human activities. Examples: Traffic, airplane engines.

Transportation Noise: Related to vehicles, trains, airplanes, and ships. Examples: Honking, engine sounds.

Household Noise: Arises from daily activities at home. Examples: Vacuum cleaners, televisions.

Occupational Noise: Found in workplaces outside heavy industries. Examples: Office printers, telephones.

2. Based on Characteristics

Continuous Noise: Steady sound without significant variation. Examples: Fans, engine hums.

Intermittent Noise: Alternates between noise and silence. Examples: Airplane flyovers, car horns.

Impulsive Noise: Sudden sharp bursts of sound. Examples: Gunshots, fireworks.

Low-Frequency Noise: Sounds below 250 Hz. Examples: Heavy machinery vibrations.

High-Frequency Noise: Sounds above 2,000 Hz. Examples: Screeching brakes, alarms.

Classification by Impact

Mitigating Noise

Soundproofing: Use materials like acoustic panels, carpets, and curtains to absorb or block noise.

Regulations: Enforce noise control laws in industries and urban areas.

Awareness: Educate people on the effects of noise pollution and promote quieter technologies.