Abstract:

In a previous paper [P. M. Scheifele and D. G. Browning, J. Acoust. Soc. Am. 100, 2710(A) (1996)] it was found that the source level for a howling Eastern Coyote is a relatively high 93 dB. At a primary frequency of 500 Hz this howl should have a strong signal throughout a typical territory (4x4 km) under normal atmospheric transmission conditions. Based on reported [H. E. Heffner, Behav. Neurosci. 97(2), 310--318 (1983)] canine hearing response, however, howls appear louder to humans than to canines. For low-frequency noise, such as from road traffic, the opposite is true. This brings up some interesting questions of mutual annoyance which will be discussed.