American Society of Agricultural and Biological Engineers
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Analysis of Poultry Vocalizations for Age Estimation using Cepstral Coefficients and C4.5 Classification
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org
Citation: Paper number 131598524, 2013 Kansas City, Missouri, July 21 - July 24, 2013. (doi: http://dx.doi.org/10.13031/aim.20131598524) @2013
Authors: Nathan V. Parrish, David V. Anderson, Wayne D. R. Daley, Doug F. Britton, Sim Harbert, A. Bruce Webster, Casey W. Ritz
Keywords: audio animal welfare age estimation C4.5 classi?er MFCC growout
Abstract. Poultry scientists and researchers have been studying the possibility of identifying bird stress from the vocal patterns of broiler ï¬‚ocks. Being able to identify stress or sickness in a ï¬‚ock can lead to early interventions. However, as the ï¬‚ock ages, the vocal properties change. This paper presents the preliminary results of an age classiï¬cation technique using the C4.5 decision three algorithm using Mel-frequency cepstral coefï¬cients (MFCCs), audio frequencies commonly used from speech processing. Sound data was collected continuously over a 61-day period. The ï¬‚ock was composed of 400 Cobb500TM broilers raised under research conditions mimicking commercial operations. Results of the data processing and the C4.5 classiï¬cation indicate that age can be determined within one day of error with 70% frequency. This process of determining age of a ï¬‚ock is intended to be the ï¬rst step in a larger comprehensive system for identifying the condition of the ï¬‚ock and assessing animal welfare.
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