Abstract
Sound is an example of a mechanical waves, especially longitudinal wave. Using simple experiments involving musical instrument of Gamelan family and Oscope apps in a couple of smartphones, it is useful and possible for students to "see" characteristics of sound waves. This study aimed to: (1) illustrate the nodes-antinodes of standing acoustic waves in musical instrument of the Gamelan; (2) see the forms of sound waves for each Gamelan's instrument; (3) explain relationship between frequency and length; and (4) know about student's response after that learning. This study used experimental method. From this study can be concluded that: (1) the nodes-antinodes standing acoustic waves in musical instrument of the Gamelan can be drawn based on the results of video recording; (2) the form of sound waves for each Gamelan's instrument can be see using the Oscope apps; (3) relationship between frequency and length is inversely proportional; and (4) very good student's response with that learning.
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