After reading this article you will learn about:- 1. Introduction to Hearing 2. Hearing Mechanism 3. The Human Ear 4. Threshold 5. Pitch 6. Loudness Levels 7. Differential Sensitivity 8. Speech Spectrum 9. Psychological and Linguistic Factors 10. Effect of Noise 11. Evaluating the Exposure to High Levels of Noise 12. Reduction at the Ear. Contents: Introduction to Hearing Hearing [...]
After reading this article you will learn about :- 1. Introduction to Noise 2. Vehicle Noise 3. Methods of Analyzing 4. Sources 5. Isolation and Insulation 6. Boom Frequencies 7. Noise Spectrum in Vehicles 8. Brake Squeal Noise. Contents: Introduction to Noise Vehicle Noise Methods of Analyzing Vehicle Noise Sources of Vehicle Noise Isolation and Insulation of Vehicle Noise Boom [...]
Equipment used and Methods of Measurement: In general two types of measurements were made for collection of noise level data in various cities of India. For one type of measurement a correct Sound Level Meter (SLM) was selected from which readings were manually read for about a minute. As a single reading indicates noise level for a time lasting 12 [...]