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. 2012 Jun 28;8(6):e1002546. doi: 10.1371/journal.pcbi.1002546

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Arneodo et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The pressure gesture of the bird is recorded simultaneously with its song. Then, the parameters driving the normal form to produce synthetic song are reconstructed, and the bird is muted. The bird is then connected to the electronic syrinx via its thoracic air sac pressure, which is digitized and fed to the DSP. In the DSP, an algorithm detects the onset of the first syllable of the motif in the degraded gesture of the muted bird. Upon detection, the model is integrated in real-time while the attempt of the bird to continue with the motif is inferred from the motor gesture. The computed pressure fluctuations at the output of the beak are converted to an analog signal and played through a speaker located away from the bird.

Inline graphic — The pressure gesture of the bird is recorded simultaneously with its song. Then, the parameters driving the normal form to produce synthetic song are reconstructed, and the bird is muted. The bird is then connected to the electronic syrinx via its thoracic air sac pressure, which is digitized and fed to the DSP. In the DSP, an algorithm detects the onset of the first syllable of the motif in the degraded gesture of the muted bird. Upon detection, the model is integrated in real-time while the attempt of the bird to continue with the motif is inferred from the motor gesture. The computed pressure fluctuations at the output of the beak are converted to an analog signal and played through a speaker located away from the bird.