The spectral and temporal description of Javanese Gong Kempul

Abstract

In Central Java, the Gong Kempul is one of eminent gamelan instrument, an ensemble of predominantly struck instruments fo und across Central Java and has deep philosophical meaning for Javanese. However, there lack of studies concerning on this particular instrument as a bridging means between scientific description and human artistic perception. This study aims to investigate the spectral and temporal properties as well as particularly look into the typical wave-like sound of the Gong Kempu!. Acoustic measurements were conducted and analyzed using ARTA. Both fr equency and time domain analyses were explored to better understand the nature of the Gong Kempu!. It was fo und that the partials at 93.8 Hz, 187.5 Hz, 281.3 Hz, and 375 Hz are the strict integer multiples of the fu ndamental fr equency. It can also be inferred that the fu ndamental fr equency at 93.8 Hz decays much more slowly than the other harmonic. In addition, the pitch of the Gong Kempul slide upward as the time goes on. The wave-like sound of the Gong Kempul is due to the beat phenomenon between two partials that occur closely.

Time-frequency analysis on gong timor music using short-time fourier transform and continuous wavelet transform

“…Time-frequency analysis of music signals is important in the development of other music signal processing applications such as a peak of detection, blow detection and tone tracking (called transcriptions) [3][9] [11]. Comparison of the appropriate frequency time required to overcome short blow-density and amplitude.…”