The acoustic environment of a concert hall is acoustically specially designed for musical performances, typically in a single configuration for general use. While this may be effective for certain genres, it can be less suitable for others. Since traditional music is usually performed with no standardized acoustic, large-capacity halls specifically designed for traditional music, particularly angklung, remain scarce, let alone one capable of accommodating both classical and traditional music in a multipurpose setting. This study explores adjustable design capable of accommodating multiple genres through variable reverberation times. Through modeling and simulation using the room mapping module in EASE 5 software, four hall configurations were developed for angklung and three classical […]

Natural acoustic foams used in recording studios, auditoriums, cinemas, etc., are largely of petrochemical origin and cause environmental and health problems. The current research explores the application of natural rubber (NR) latex foam as a substitute material. Three types of NR latex foams low ammonia (LATZ), deproteinized (DPNR), and epoxidized (ENR)were developed and characterized for their acoustic and mechanical performance. Sound performance was tested in an impedance tube to ISO 10534-2, for sound absorption coefficient (SAC), noise reduction coefficient (NRC), and sound transmission loss (STL). Results indicate that STL is a rising function of foam density, while SAC in the low-frequency range is a function of density but in high […]

Within Malaysia, one of the oldest Malay’s art heritage is traditional music with accompanying instruments where knowledge is passed down from one generation to another. These days, they still appear as a medium of communication and entertainment by supplementing the performing arts in the local community (Kechot 2013). Henceforth, the existence of the musical instruments symbolised proof of the old local’s wisdom and understanding of social needs. The common ones are cak lempong, gambus, gendang, gong, kompang, seruling (flute), rebab and rebana. They produced vast acoustic diversities with varying tones, melody and rhythms. Alternatively, the sound can be converted and observed in the time series and frequency domain (Darji 2017). […]