Yusuf Niko Fitranto, Bambang Heru Iswanto, and Haris Suhendar. 2025. “ANALYSIS OF COCONUT MATURITY LEVEL RECOGNITION USING PRINCIPAL COMPONENT ANALYSIS (PCA) METHOD BASED ON COCONUT KNOCKING SOUND DATA IN OPEN SPACES: ANALISIS PENGENALAN TINGKAT KEMATANGAN KELAPA MENGGUNAKAN METODE PRINCIPAL COMPONENT ANALYSIS (PCA) BERDASARKAN DATA SUARA KETUKAN KELAPA DI RUANG TERBUKA”. PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) 13 (1):FA-67. https://doi.org/10.21009/03.1301.FA09.