Utilization of Disposable Mask Waste and Coconut Fiber as an Acoustic Composite Material by Khairunnissa Ramadhani, Arrizal Abdul Aziz, Miftahul Akbar Ramadhan, Amara Huaida Alifah, Try Ramadhan

Subjects: “…Acoustic material…”
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EVALUATION OF THE REVERBERATION TIME IMPROVEMENT IN A SPEAKING HALL by FLORIN MARIAN NEDEFF, MARCEL AGOP, EMILIAN FLORIN MOȘNEGUȚU, NARCIS BARSAN

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