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Figure 5


Fig. 5. Unilaterally produced subharmonics and deterministic chaos (mockingbird m152). (A) Arrows indicate abrupt transitions from a harmonic vocalization to a chaotic sound. The chaotic region is followed by a period of subharmonics (arrow b) after which the vocalization returns to a periodic state. (B) A 25 ms segment of the sound waveform. The arrow indicates an abrupt transition from a periodic to aperiodic oscillation. (C) Power spectrum taken at arrow b (spectrogram, A). Spectral peaks show sound energy at f0 and associated harmonics (2f0, 3f0, etc) as well as at 0.5f0 and related harmonics (1.5f0, 2.5f0, 3.5f0, etc.) Abbreviations as in Fig. 3.





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