菲尔德斯半岛黑背海鸥鸣声特征初步分析

A PRELIMINARY ANALYSIS OF SONG CHARACTERISTIC OF THE SEA GULL IN ANTARCTICA

本文对南极菲尔德斯半岛黑背海鸥在某些生态行为下发出的鸣声波形结构和参数进行了分析。得出 :幼黑背海鸥发出“吱”声 ,频带在 1 6 1 0至 483 1 Hz,谱峰在 1 .7、2 .5和 2 .9k Hz;黑背海鸥发出“哦”声 ,频带在 1 1 71至 43 4 3 Hz,谱峰约在 1 .5 k Hz;黑背海鸥发出“哦啊”声 ,频带在1 0 72至 3 93 2 Hz,谱峰在 1 .2、1 .7和 3 k Hz,“咯”声 ,频带在 1 3 6 0至 41 5 3 Hz,谱峰在 1 .3、2和 2 .9k

This paper describes and analyzes the structure of the wave form and parameters of the song characteristics of Larus Dominicanus in the Fildes Peninsula, Antarctrica under different ecologic behaviour. After analysing and processing the sound signals in laboratory, we obtain four kinds of continuous sound signals in different behaviour. (1) The frequency of signal 'zhi' made by a juvenile Larus Dominicanuswas 1610. 4-4831.2Hz. The spectrum crests in this frequency range mainly concentrated on 1.7, 2.5 and 2.9kHz. (2) Larus Dominicanus made signal 'e' with a frequency of 1171.2-4343.2Hz. The spectrum crests in the frequency domain concentrate on about 1.5kHz. (3) The frequency of signal 'ea' made by the Larus Dominicaus was 1072.5-3932.5Hz, and its spectrum energy in this frequency range mainly concentrated on 1.2, 1.7 and 3 kHz. (4) The frequency of singnal 'ge' was 1360.5-4153.5Hz. The spectrum crests focussed on 1.3, 2 and 2.9kHz.