Browsing by Keywords "Impact acoustics"
Now showing items 1-5 of 5
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Classification of closed and open shell pistachio nuts using principal component analysis of impact acoustics
(IEEE, 2004-05)An algorithm was developed to separate pistachio nuts with closed-shells from those with open-shells. It was observed that upon impact on a steel plate, nuts with closed-shells emit different sounds than nuts with open-shells. ... -
Detection of empty hazelnuts from fully developed nuts by impact acoustics
(IEEE, 2005)Shell-kernel weight ratio is the main determinate of quality and price of hazelnuts. Empty hazelnuts and nuts containing undeveloped kernels may also contain mycotoxin producing molds, which can cause cancer. A prototype ... -
Identification of damaged wheat kernels and cracked-shell hazelnuts with impact acoustics time-frequency patterns
(American Society of Agricultural and Biological Engineers, 2008)A new adaptive time-frequency (t-f) analysis and classification procedure is applied to impact acoustic signals for detecting hazelnuts with cracked shells and three types of damaged wheat kernels. Kernels were dropped ... -
A signal representation approach for discrimination between full and empty hazelnuts
(IEEE, 2007)We apply a sparse signal representation approach to impact acoustic signals to discriminate between empty and full hazelnuts. The impact acoustic signals are recorded by dropping the hazelnut shells on a metal plate. The ... -
Subset selection with structured dictionaries in classification
(EURASIP, 2007)This paper describes a new approach for the selection of discriminant time-frequency features for classification. Unlike previous approaches that use the individual discrimination power of expansion coefficients, the ...
