Determining Philippine coconut maturity level using machine learning algorithms based on acoustic signal. - June Anne Caladcad; Shiela Cabahug; Mary Rose Catamco; Paul Elyson Villaceran; Leizel Cosgafa; Karl Norbert Cabizares; Marfe Hermosilla; Eduardo Piedad Jr. (Comput. Electron. Agric., 2020)