khalifa, smail, tousi, behrouz and Komarizadeh, M. H. (2012) “Recognition of Fill Walnuts and Empty Walnuts Using Acoustic Signal Processing”, International Journal of Agricultural and Biological Engineering, 5(3). Available at: https://www.ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/387 (Accessed: 27 February 2026).