Department of Physics and Astronomy, San Francisco State University, San Francisco, California 94132, USA.
J Acoust Soc Am. 2010 Jul;128(1):490-4. doi: 10.1121/1.3446099.
Vocalizations of blue whales were recorded with a cabled hydrophone array at Pioneer Seamount, 50 miles off the California coast. Most calls occurred in repeated sequences of two-call pairs (A, then B). The B call is a frequency-modulated tone highly repeatable in form and pitch. A model of this sound is described which permits detecting very small frequency shifts. B calls are found to be aligned in frequency to about one part in 180. This requires very fine pitch discrimination and control over calling frequency, and suggests that synchronizing to a common frequency pattern carries some adaptive advantage. Some possibilities for acoustic sensing by whales requiring this fine frequency resolution are discussed.
使用带有缆绳的水听器阵列在加利福尼亚海岸外 50 英里的先锋海山记录了蓝鲸的发声。大多数叫声以两声对（A，然后是 B）的重复序列出现。B 叫声是一种调频调幅的音调，在形式和音高上高度可重复。描述了这种声音的一种模型，该模型允许检测到非常小的频率偏移。发现 B 叫声在频率上对齐到大约 180 分之一。这需要非常精细的音高辨别力和对呼叫频率的控制，并表明同步到共同的频率模式具有一些适应优势。讨论了需要这种精细频率分辨率的鲸鱼进行声纳感知的一些可能性。
