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Suyatno Suyatno
Department of Physics, Institut Teknologi Sepuluh Nopember, Jalan Arif Rahman Hakim, Keputih, Sukolilo, Surabaya, 60111
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Analysis of Onstage Acoustics Preference of Musicians of Traditional Performance of Javanese Gamelan Based on Normalized Autocorrelation Function Suyatno Suyatno; Harijono A. Tjokronegoro; I Gede Nyoman Merthayasa; Rahayu Supanggah
Journal of Engineering and Technological Sciences Vol. 48 No. 5 (2016)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2016.48.5.5

Abstract

On-stage sound field analysis of a traditional performance of the Javanese gamelan at Pendopo ISI Surakarta, Indonesia was conducted by analyzing the effective decay time of a normalized autocorrelation function called tau-e, Ï„e , during a performance of the Gambyong Pare Anom dance. The parameter tau-e is used to describe the richness of the frequency content, tempo, and types of gamelan instruments being played at a certain time and position on stage. The tau-e parameter is important for musicians in order to maintain communication between each other such that they can keep the performance in harmony. In order to determine the acoustic parameters heard by gamelan musicians on stage, sound measurements were conducted at 4 points on stage during a performance. Each position represents a specific group of gamelan instruments, which have different characteristics of loudness and frequency, different functions and different ways the instruments are played. The analysis showed that each of the four positions had a different value of Ï„e , which fluctuated throughout the performance. Overall, the dominant Ï„e at position 1 was 20 ms; at position 2 it was 50 ms; at position 3 it was 20 ms; and at position 4 it was 40 ms. The distribution of Ï„e on the stage shows that positions 1 and 3 had more frequency richness compared to positions 2 and 4.
Co-Authors Harijono A. Tjokronegoro I Gede Nyoman Merthayasa Rahayu Supanggah