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The Science of Sound

by: Ms. Mckenzie Labadie

The Science of Sound ISP 215

Ms. Mckenzie Labadie
GPA 3.62

Jon Pumplin

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About this Document

Jon Pumplin
Class Notes
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This 6 page Class Notes was uploaded by Ms. Mckenzie Labadie on Saturday September 19, 2015. The Class Notes belongs to ISP 215 at Michigan State University taught by Jon Pumplin in Fall. Since its upload, it has received 12 views. For similar materials see /class/207726/isp-215-michigan-state-university in Integrative Studies Physical at Michigan State University.

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Date Created: 09/19/15
When a tuning fork was struck in class7 it could produce two different frequencies at the same time Suppose that the the lower frequency was 200 HZ and the oscilloscope showed a pattern like this 1 What was the higher frequency 2 What is the length of time recorded in the graph 3 What would the spectrum analyzer show A metal bar like the one demonstrated in class is oscillating with a frequency of 500 HZ The extreme positions of the motion of the bar are shown by the dashed picture and the dotted picture How long does it take for the shape to change from the dashed shape to the solid straight shape What is the wavelength of the sound produced by the A 440 tuning bar that is frequently demonstrated in Class A tone is produced by adding together the following sine waves Frequency in HZ 110 220 330 440 550 660 Amplitude 100 80 60 40 30 20 Phase in degrees 90 90 90 180 180 180 Answer T True or F False H 2 pts You could make the tone quality timbre sound much different by changing the amplitudes of some of the sine waves 3 2 pts You could make the tone quality sound much different by changing the phases of some of the sine waves 00 2 pts You could make the waveform look much different on the oscilloscope by changing the amplitudes of some of the sine waves 4 2 pts You could make the waveform look much different on the oscilloscope by changing the phases of some of the sine waves Cf 2 pts You could make the display on the spectrum analyzer look much different on the oscilloscope by changing the phases of some of the sine waves A trombone produces a sound intensity level of 86 dB Find its sound intensity in watts per square meter A 400 HZ sine tone has a sound intensity level of 60 dB In order to make it noticeably louder7 you would need to increase its sound intensity level to about choose the best answer 60002 dB 6002 dB 602 dB 62 dB 70 dB 72 dB 82 dB 92 dB In order to make a 1000 HZ sine tone sound noticeably higher in pitch7 you would need to increase its frequency to about 1001 Hz 1002 Hz 1010 Hz 1060 Hz 1600 Hz 2000 Hz Select the best answer When no one is talking in our classroom and no demonstrations are turned on7 the sound level in our classroom is closest to i100dB 725 dB 715 dB 0dB 15 dB 25 dB 45 dB 65 dB 95 dB 115 dB


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