Supersonic Cries of Bats
Supersonic Cries of Bats
复制标题
蝙蝠的超音速叫声
DOI：
10.1038/158135a0
复制
发表时间：
1946
期刊：
影响因子：
64.8
通讯作者：
H. Hartridge
中科院分区：
文献类型：
--
作者：
H. Hartridge
格里芬博士最近发表了一些关于蝙蝠叫声的进一步观察，这很令人感兴趣。他清楚地证明，声音的脉冲通常非常短，持续时间通常不超过2.3毫秒。他还发现，超音速音调的频率在脉冲期间会发生变化，例如，具有80kC的频率。在开始的时候，降到了50KC以下。在最后。这种不到八度的下降似乎是典型的。格里芬博士获得的记录在这两点上都非常令人信服。
DR. GRIFFIN has recently published1some further observations on the cries of bats, which are of great interest. He demonstrates clearly that the pulse of sound is often extremely short, having a duration which usually does not exceed 2.3 milliseconds. He also finds that the frequency of the supersonic tone alters during the pulse, having a frequency, for example, of 80 kc. at the beginning, dropping to less than 50 kc. at the end. This drop of somewhat less than an octave seems to be typical. The records which Dr. Griffin has obtained are very convincing on both these points.