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200 kHz Commercial Sonar Systems Generate Lower Frequency Side Lobes Audible to Some Marine Mammals
Figure 1
Sample raw waveforms collected for each sonar at a distance of approximately 20 m.
A. Kongsberg (22 m); B. BioSonics (16 m); C. Imagenex (20 m).
doi: https://doi.org/10.1371/journal.pone.0095315.g001