PPT-L6 and L7 Sound Intensity, Sound Level/Loudness (Decibels), The Ear

519 You and I are standing next to each other listening to the exact same steady sound Our ears are identical You listen for TWICE as long as I do How does the average power compare Please average ONLY over the time that the individual is listening. The unit of force is usually Newton where one Newton is approximately the force with which a weight of 0 kg is dragged down to the ground here on earth and area is measured in The unit for pressure is therefore Nm which is also referred to as Pasca Section 8.5. Key Terms. Audible Sound Waves. Infrasonic Wave. Ultrasonic Wave. Echo. Mach Number (. M. ). Pressure (. p. ). Sound Intensity. Decibel (dB). Categories of Sound Waves. Sound waves fall into three categories covering different ranges of frequencies.. . How is sound produced, how does it travel through the air and how do we hear sounds?. Sound II. As the vocal chords vibrate, the air is alternately compressed and rarefied resulting in a longitudinal pressure wave. Class 2 – Outline:. Waves in 2-D and 3-D. Spherical waves and plane waves. Index of Refraction. Power, Intensity and. . Decibels. The Doppler Effect. Last Time. Mechanical Waves: waves that require a medium. pp. 487 - 493. Mr. Richter. Agenda. Podcast Check. Questions about 13.1 Sound Waves. Upcoming Schedule. Notes:. Intensity and Volume. Decibel levels. Forced Vibrations and Resonance. Upcoming Schedule. Sound Intensity, Sound Level/Loudness (Decibels), The Ear. 5.1.9. You and I are standing next to each other, listening to the exact same steady sound. . Our ears are identical. . You listen for TWICE as long as I do. Presented by . Vinoth. . Kulaveerasingam. QMUL ELE021/ELED021/ELEM021 • 5 Mar 2012. Paper by . Jorg. . Langner. and Werner . Goebl. Visualizing Expressive Performance in Tempo-Loudness Space. What is the aim?. UCOP Safety Meeting . March 2010. Developed by Karen Hsi, UCOP EH&S Student Intern. Noise and Acoustics. Noise and Acoustics. Hazardous noise exposures occur. On the job…. And off the job…. Measuring Noise. What are the properties of sound waves?. My Top 5 List of. “Unpleasant” Sounds. Record in your journal a top 5 list of sounds that are “unpleasant” to you. . What do you think causes a sound to be unpleasant?. Sound is a compression wave - it only “looks” like a wave if we plot air pressure against time. time ->. Air Pressure. Period - amount of time for one cycle. Frequency = number of cycles per second (1/Period). Sensory . System. 3 Parts. : Outer – Middle - Inner. Outer Ear: Auricle. Called the . Pinna. . Fx. : Collects sound waves. Visible part of the ear, outside the head. Outer Ear: External Auditory Canal. Sound waves carry energy that can be used to do work, like forcing the eardrum to vibrate.. The energy can be great enough to cause damage to windows and buildings (sonic boom). Sound Intensity. The amount of energy transported per second by a sound wave is the . 1. Which statement accurately describes the mathematical relationship between the intensity of a sound and the decibel rating? Noise Audit Training. Updated: April, 2014. Module 2 - Noise Audit . Training. Purpose of this . module. This module provides training on noise required to conduct a noise audit. It covers the following topics:.