Study of stage acoustic parameters of Cak Durasim concert hall Surabaya for javanese traditional dance performance

One of the important things in stage acoustic is how a performer can hear their own and their comrades' musical instrument. Stage acoustics condition for Indonesian traditional music will affect the quality and harmonization of the performance. Music on traditional dance performance has an important role in determining the dance movement. This paper discusses the stage acoustic parameters for a Javanese traditional dance performance on Cak Durasim Concert Hall Surabaya based on the optimum acoustics parameters of the Javanese gamelan as an accompanying music for Javanese traditional dance. Those parameters are loudness level, RT, BR, TR, C₈₀, D₅₀ and Support. Measurements were made with two variations of sound source position, which are on the corner in front of the stage and on the center in front of the stage. According to the measurement result and analysis, the optimum position for gamelans' player is on the corner in front of the stage, but with the loudness level distribution having a 4dB difference between the nearest and farthest positions from the source. This result is also supported on the aesthetic side of the layout of the show because its location does not affect the visual side that became the main focus of dance performances.