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Bioacoustics is the study of sound communication between animals. This included bioacoustics in environmental monitoring, recording and analysis equipment and techniques, underwater sound, bioacoustical sound structures, patterns, variation and repertoires.

In bioacoustics, one of the many experimental techniques used is playback experiment which is used to investigate the significance of sounds in animal communication systems. In this experiment, a recording of naturally occurring or synthetic sounds is played to animals and then study their responses to it. In birds, it is used to study the specific time and pattern of their singing behavior.