A Framework for Automated Marmoset Vocalization Detection And Classification
MASSACHUSETTS INST OF TECH LEXINGTON LEXINGTON United States
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This paper describes a novel framework for automated marmoset vocalization detection and classification from within long audio streams recorded in a noisy animal room, where multiple marmosets are housed. To overcome the challenge of limited manually annotated data, we implemented a data augmentation method using only a small number of labeled vocalizations. The feature sets chosen have the desirable property of capturing characteristics of the signals that are useful in both identifying and distinguishing marmoset vocalizations. Unlike many previous methods, feature extraction, call detection, and call classification in our system are completely automated. The system maintains a good performance of 80 detection rate in data with high number of noise events and is able to obtain a classification error of15. Performance can be further improved with additional labeled training data. Because this extensible system is capable of identifying both positive and negative welfare indicators, it provides a powerful framework for non-human primate welfare monitoring as well as behavior assessment.