魏翀;张宇;张赛;徐晓辉;

• 1:厦门大学水声通信与海洋信息技术教育部重点实验室

摘要：

对所采集到网箱中人工养殖的两组不同年龄大黄鱼(Pseudosciaena crocea)产生的声信号进行定量分析和比较,运用分段指数振荡函数合成大黄鱼声信号,并利用振荡频率和衰减指数定量地描述了鱼声信号特性。结果显示,合成的大黄鱼声信号在时频域都显示出很好的拟合优度,13—15月鱼龄组的平均振荡频率和衰减指数均低于7—8月鱼龄组。结果表明函数的振荡频率和衰减指数与大黄鱼发声的物理过程及年龄特征存在一定的联系,为今后人工养殖大黄鱼中声学技术的相关应用提供一定的科学参考和基础。

关键词：

Abstract: This study performs the quantitative analysis and comparison to acoustic signal characteristics of Large Yellow Croaker(Pseudosciaena crocea) at two different ages.The sounds were recorded from the fishes in a net-cage. Two exponential oscillation functions are built to fit the acoustic signal of the fishes.The signal characteristic of the oscillation frequency and attenuation coefficient was described quantitatively.Simulation curves of the function could fit well acoustic signals.Both the average oscillation frequency and attenuation coefficient of the fitted signals from the 13-15-month-old fishes are lower than those from the 7-8-month-old fishes.The results suggest that the oscillation frequency and attenuation coefficient of the acoustic signal function may be relevant to the physical process of sound production and age characteristics of Large Yellow Croaker.This study may be valuable for the acoustic application to the artificial culture of the species.

Keywords:

基金项目: 国家自然科学基金(11174240);; 福建省自然科学基金(2060203)计划资助项目

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