SARON DEMUNG’S TIMBRE AND SONOGRAM OF GAMELANS GUNTURMADU FROM KERATON NGAYOGYAKARTA
ABSTRACT: The aim of this
research is to study the timbre spectrums of Saron Demung instruments of
gamelans Gun-turmadu 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.
Author: H. Kuswanto
Journal Code: jppendidikangg120009
