CD411- Notes 1
CD411- Notes 1 CD 411
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This 1 page Class Notes was uploaded by Leah Larabee on Friday January 23, 2015. The Class Notes belongs to CD 411 at University of Alabama - Tuscaloosa taught by Dr. Buhr in Spring2015. Since its upload, it has received 157 views. For similar materials see Speech Science in Language at University of Alabama - Tuscaloosa.
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Date Created: 01/23/15
Speech Science The Nature of Sound Waves A source of sound must be able to vibrate To vibrate a source must have two properties mass m elasticity E To transmit sound it must be in a medium and have both of those properties Mass l m I The amount of matter present Applies to gases liquids amp solids Weight is an attractive gravitational force mass is the quantity of matter present 0 In this class we will measure in kgs Density 9 is the mass per unit volume p mv Density is a quantity derived from another quantity mass Elasticity l E I Property that enables recovery from distortion of shape or volume The property addressed by Newton s first law is called inertia Newton s Inertial Law All bodies remain at rest or in a state of uniform motion unless another force acts in opposition Newton s Third Law With every force there must be an equal and opposite reaction force Magnitude of inertia is directly proportional to the mass thus mass is a measure of inertia 0 Example in class tuning fork Force cannot exist alone Vibration elasticity is the reaction force to inertia Density increases compression Density decreases rarefaction SOUND characterized by propagation of density changes through elastic medium Need to consider selected physical quantities such as mass denSIty e Derived force pressure displacement Fundamental qualities length mass time
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