摘要
本文运用计算机鸣声分析技术，对嵊泗和杭州两地白头鹎夏季的主要鸣声类型和声谱特征等方面进行了分析比较。两地白头鹎的鸣声类型，时域结构和频谱特征都有很大的差异。这可能与两地生境类型的差异有关。但在变音句鸣声的音节组合方式和单音节鸣声的构成等方面仍有共同之处。
The comparative studies on the charactenstics of Chinese bulbul (Pycnonotus sinensis)songs between Shensi Island and Hangzhou area have been made in this paper with computer analysis techniques.The results shows that there were 15 song types in the bulbuls of Shensi Island (SB) and 6 in the bulbuls of Hangzhou (HB), and their trills were composed of a main sentence, including 3 syllables in SB and 4 in HB, and some other single syllables. Although there were some same characteristics on the composition of the song syllables and the way of calling between SB and HB,there were many different characteristics on the song structure between them.The intermission between syllables,for example, in SB's main sentence was longer than in HB's. The maximum MPF of the SB's main sentence was located in 2nd syilable minimum in 3rd syllable,and the powers and En values of the all syllables were high and no obvious difference. The total time of the SB's main sentence duration was 800. 88±37.86 ms. In the HB's main sentence, there were no visible syllable intermissions besides between 1st and 2nd syllables, and the maximum MPF was located in 4th syllable and minimum in 3rd one. The power of all syllables were difference in HB's, and the En was mainly distributed in last syllable. The total lasting time of the HB's main sentence was 1076.65±58.2 ms.From the results,we also could know that the calling song had much moredifference on the structure of temporal waves and power spectrum of the single syllable between SB and HB.The differences of the bird's song structure between SB and HB might be correlated with their habitats.
基金
浙江省自然科学基金
关键词
白头鹎
鸣声
频谱分析
Pycnonotus sinensis, Song, Power spectrum
