Measurement of Ripeness of Durian from the Sound Wave Frequency

  • Siriluck Sangkue Suratthani Rajabhat University
  • Supaporn Kongmakee Suratthani Rajabhat University
  • Chainuson Kasagepongsarn Suratthani Rajabhat University
  • Watcharakorn Srikom Suratthani Rajabhat University
Keywords: Fourier transform, Monthong durian


This report is a study to analyze the ripeness of Monthong durian by using sound signals, which is caused by the knock of durian fruit in relation to the time after harvest, and design various experimental methods that can be used, it divided into steps as follows. The first step is the audio signal collection using an oscilloscope, and analysis using the Fourier transform using Microsoft Excel. The second step, it is an analysis of the experimental results. As a result of the Fourier transform of the audio signal from a time domain to a frequency domain. It is found that the frequency of durian sound decreased with the time of harvest.