Date: October 24, 2014
INEN 4316/5386 – Fall 2014
Homework and Study Guide for
Chapters 10 AND Notes – “Noise and Noise Control” DUE: October 24, 2014
These study questions serve two purposes:
1. As homework. You are ONLY required to complete and submit the questions included in the HOMEWORK section by the due date (above)
2. As a study guide. Students are strongly recommended to use all questions as a study guide for exams. These are included in the STUDY GUIDE section. INSTRUCTIONS
1. ONLY submit the Homework. Do NOT submit the Study Guide.
2. Use this MS Word document to answer the questions and submit (by email) this MS Word document with your answers as an attachment to my grader at: ademissie@lamar.edu AND copy me: brian.craig@lamar.edu
3. Do NOT submit through Blackboard
HOMEWORK
1. Define the term sound.
Vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.
2. What is the difference between sound and noise?
Sounds are mechanical waves of pressure allow us to hear and listen. Noises are unwanted and loud sounds. Noise can also refer to the static that is heard on the TV or radio during weak signals.
3. Differentiate between sound and vibration.
Sound waves are resulted due to vibrations
4. Describe the relationship between the pitch of sound and the cycle of sound waves.
Sound is represented by a wavy line that crosses above and below the straight line.
The more frequently the sound waves cross the normal atmospheric pressure line (the shorter the cycle), the higher the pitch of the sound.
The greater the vertical distance above and below the atmospheric pressure line, the louder or more intense the sound.
5. List and briefly explain the three broad types of industrial noise.
Wide band noise: is noise that is distributed over a wide range of frequencies. Most noise from manufacturing machines is wide band noise.
Narrow band noise: is noise that is