声腔系统

我国的戏曲音乐历史悠久、艺术成果丰硕，其中一些占老的声腔系统经过流传和发展，成为了各具特色的地方剧种。

Chinese traditional opera has long profound history and abundant artistic achievements . From spreading and developing the old and conventional tune system , some of the Chinese traditional opera has become local operas with their own characteristics .

结果表明：强耦合系统具有较强的闭环反馈系统特征，弱耦合系统具有较强的前馈系统特征；正是由于反馈环节的存在，改变了结构、声腔系统的固有特性和固有频率；

The analysis results demonstrate that the strongly coupled system has obvious closed-loop feedback characteristics , whereas the weakly coupled system has obvious feedforward characteristics , and it is because of the presence of the feedback loop that the natural characteristics and eigenfrequency are changed .