Ambient noise decreases detectability of songbird vocalizations in passive acoustic recordings in a consistent pattern across species, frequency, and analysis method

@article{Apol2020AmbientND,
  title={Ambient noise decreases detectability of songbird vocalizations in passive acoustic recordings in a consistent pattern across species, frequency, and analysis method},
  author={Chad A. Apol and Ethan C. Valentine and Darren S. Proppe},
  journal={Bioacoustics},
  year={2020},
  volume={29},
  pages={322 - 336}
}
ABSTRACT The presence of ambient noise is a potential constraint that can impact studies that rely on passive acoustic recording units to compare biotic signals across a range of ambient noise levels. To investigate the hypothesis that ambient noise will impact the detectability of recorded acoustic signals, we projected noise with different amplitudes and frequency distributions into one microphone on a passive acoustic recording unit, while recording simultaneously from a second unit free of… 
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