J. Nat. Scien. & Math. Res. Vol. 2 No.1 (2016) 122-126, 122 Available online at http://journal.walisongo.ac.id/index.php/jnsmr Analysis of Angklung Sound Intensity as a Acoustic Instrument Rizka Silviana Hartanti1, and Budi Astuti2 1Physics Education Postgraduate Program Universitas Negeri Semarang, Unnes Campus Bendan Ngisor Sampangan Semarang 50233 2 Department of Physics, Universitas Negeri Semarang, Semarang State University, Campus Sekaran Gunungpati, Semarang, Central Java, Indonesia. Abstracts Corresponding author: The purpose of this study was to analysis of angklung sound intensity. The
[email protected] research method is using angklung musician 2 octaves. Each consists of two tube Recived: 12 April 2016, tone that sounded from the tone of G to G ', length and diameter of the tube every Revised : 15 May 2016, tone becomes independent variable, while intensity of the sound produced Accepted: 24 June 2016. becomes dependent variable. Sound intensity is measured using a Sound Level Meter is placed with a constant distance. The result showed that G tone was a low tone which had a frequency of 49.5 Hz, first tube had 21.6 cm length and 4.1 cm diameter, second tube had 10.1 cm length and 3.4 cm diameter produced the sound intensity of 90.7 dB. G’ tone was a high tone which had a frequency of 99 Hz, first tube had 10 cm length and 3 cm diameter, second tube had 5.5 cm length and 2.1 cm diameter produced the sound intensity of 99.1 dB. It can be concluded that the higher the frequency, the greater the intensity of the sound produced.