PubMed · 4034722
An avian vocalization detector.
Abstract
A simple circuit to detect avian vocalizations is described. Adjustments of five different controls (frequency, bandwidth, amplitude, duration and spacing) allow the circuit to accurately detect the vocalizations of different ages and species of birds. Analyses of over 4000 peeps and 500 inter-peep intervals from 40 chicks and 16 ducklings showed that the circuit and an experienced observer agreed closely in the timing and counting of vocalizations.
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M Severns, L Gray, E W Rubel. 1985. An avian vocalization detector.. https://doi.org/10.1016/0031-9384(85)90388-9
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