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    Utilization of coconut fiber and corn cob waste as noise reducers by Amalia Ma'rifatul Maghfiroh, Ardana Putri Farahdiansari

    Published 2023-12-01
    “…Meanwhile, the highest sound/absorbed energy (mean value) was 37.7 dB at a frequency of 750 Hz in sample C, while the lowest sound/absorbed energy was -6.16 dB at a frequency of 4000 Hz in sample A.   …”
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