SARON DEMUNG’S TIMBRE AND SONOGRAM OF GAMELANS GUNTURMADU FROM KERATON NGAYOGYAKARTA
(1) Jurusan Pendidikan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Yogyakarta (UNY), Yogyakarta, Indonesia
Abstract
Penelitian ini bertujuan untuk mempelajari spectrum warna bunyi (timbre) dan sonogram dari Saron Demung Gamelan Gunturmadu dari Keraton Ngayogyakarta. Suara setiap wilahan direkam dengan bantuan pengolah suara yang ada pada komputer.  Akurasi frekuensi yang dapat diperoleh dengan pengolah ini adalah 1 Hz. Frekuensi dasar dari saron demung gamelan Gunturmadu untuk setiap wilahan #1 sampai dengan #7 masing-masing adalah 197, 207, 221, 261, 285, 304, 326 Hz. Lokasi frekuensi harmonik  tidak berturutan akan tetapi disisipi dengan frekuensi tak harmonis. Jumlah frekuensi harmonis dan tak harmonis yang membentuk warna bunyi untuk setiap wilahan berbeda. Ketebalan garis frekuensi dasar pada sonogram bertahan lebih lama dibandingkan dengan frekuensi lain pada suatu wilahan.
The aim of this research is to study the timbre spectrums of Saron Demung instruments of gamelans Gunturmadu of Keraton Ngayogyakarta. This gamelan, as a set of traditional Javanese ensemble, are a pelog scale, seven scale in one octave. Sound of Saron Demung instruments are recorded by sound software. This software can display waveform in time domain and spectrum in frequency domain. The fundamental frequency is shown directly by software.  Other peak frequencies can be traced by shifting the cursor on top of it. The accuracy of frequency that can be produced is 1 Hz. Fundamentals frequencies of  Saron Demung  keys  #1 to #7 of gamelan Gunturmadu are 197, 207, 221, 261, 285, 304, 326 Hz respectively. The location of the harmonic frequencies are not always consecutive, but sometimes punctuated by another frequency. The numbers of harmonics and inharmonic frequencies of each keys are different. The thick lines of the fundamental frequency in sonogram exist in longer time than the other.
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Berg, R.E. and Stork, D.G. 2005. The Physics of Sound. 3rd ed. New Jersey: Prentice Hall
Fletcher, N.H. 1999. The Nonlinear Physics of Musical Instruments. Rep. Prog. Phys. 62: 723–764
Gilbert, P.U.P.A., Haeberli, W. 2008. Physics in the Arts. Amsterdam: Elsevier
Guangming Li. 2006. The Effect of Inharmonic Spectra in Javanese Gamalen Tuning (I): A Theory of the Slendro, Proceedings of the 7th WSEAS international conference on Acoustic & Music: Theory and Applications, Cavtat, Croatia, June 13-15, 65-71
Gunther L. 2012. The Physics of Music and Color. New York: Springer
Heru K. 2011. Comparison Study of Saron Ricik Instruments Sound Color (Timbre) on the Gamelans of Nagawilaga and Gunturmadu from Karaton Ngayogyakarta International. Journal of Basic & Applied Sciences IJBAS-IJENS. 11 (4)
Howard, D.M., Angus, J.A.S. 2009. Acoustics and Psychoacoustics 4th edition. Amsterdam: Elsevier
Merthayasa I.G.N. and Pratomo B. 2008. The Temporal and Spectral characteristics of Gamelan Sunda Music. Proceeding Acoustics 08, Paris, June 28-July 4
Ridzuwary, M., Zainal M., Samad, S.A., Hussain, A., Azhari, C.H. 2009. Pitch and Timbre Determination of The Angklung. American Journal of Applied Sciences, January
Sethares, W.A., 2005. Tuning, Timbre, Spectrum, Scale.2ed. London: Springer
Spiller, H. 2004. Gamelan: The Traditional sounds of Indonesia. Santa Barbara: ABC-CLIO, Inc
Sumarsam. 1980. The Musical Practice of the Gamelan Sekaten. Asian Music, 12 (2): 54–73
Suprapto, Y.K., Hariadi, M., and Purnomo, H. M., 2011. Traditional Music Sound Extraction Based on Spectral Density Model using Adaptive Cross-correlation for Automatic Transcription. IAENG International Journal of Computer Science, 38 (2)
Wasisto S., P.J. Sudarjana, Adhi S. 1993. Tone Measurements of Outstanding Javanese Gamelan In Yogyakarta and Surakarta, Gadjah Mada University Press, Translated from. Penjelidikan dalam Pengukuran Nada Gamelan-gamelan Jawa Terkemuka di Jogjakarta dan Surakarta. Yogyakarta: Laboratorium Akustik, Bagian Teknik Mesin, Fakultas Teknik, UGM, 1969
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