Perception of vocal tract resonances by whooping cranes Grus americana
Perception of vocal tract resonances by whooping cranes Grus americana
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DOI：
10.1046/j.1439-0310.2000.00572.x
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发表时间：
2000-06-01
期刊：
影响因子：
1.7
通讯作者：
Kelley, JP
中科院分区：
文献类型：
--
作者：
Fitch, WT;Kelley, JP
虽然共振峰（声道共振）经常可以在鸟类发声中观察到，并且已经证明几种鸟类可以感知人类语音中的共振峰，但没有研究检查鸟类自身物种特定呼叫中的共振峰感知。我们使用的计算机合成的起重机调用在一个修改后的习惯化disabituation范式，测试共振峰感知鸣鹤（鹤美洲）的回放。在使鸟类习惯于自然接触呼叫的录音之后，我们播放了一个习惯性刺激的合成复制品作为对照，以确保合成器充分工作; 13个案例中只有一个案例中的鸟类表现出不适。然后，我们播放了同样的电话，其共振峰频率发生了变化。在12次回放中，有10次鸟对共振峰移位的叫声表现出不适应。这些数据表明，起重机感知和出席共振峰频率的变化，在自己的物种特定的发声，并与共振峰可以提供声学线索的个性和身体大小的假设是一致的。
Although formants (vocal tract resonances) can often be observed in avian vocalizations, and several bird species have been shown to perceive formants in human speech sounds, no studies have examined formant perception in birds' own species-specific calls. We used playbacks of computer-synthesized crane calls in a modified habituation-dishabituation paradigm to test for formant perception in whooping cranes (Grus americana). After habituating birds to recordings of natural contact calls, we played a synthesized replica of one of the habituating stimuli as a control to ensure that the synthesizer worked adequately; birds dishabituated in only one of 13 cases. Then, we played the same call with its formant frequencies shifted. The birds dishabituated to the formant-shifted calls in 10 out of 12 play-backs. These data suggest that cranes perceive and attend to changes in formant frequencies in their own species-specific vocalizations, and are consistent with the hypothesis that formants can provide acoustic cues to individuality and body size.