首先利用多维逆m序列作为激励输入信号，用实验法建立出空气传送部分的多变量离散状态空间模型。
Firstly, the paper models the multivariable discrete state-space model of the air transmission unit by the lab method, using multi-dimensional inverse m series as input stimulus signal.
并且研究了语音信号的数字模型，包括激励模型、声管模型和辐射模型三个子模型。
Then I research the three submodel of digital model of voice signal: inspired model, sound gate model, and radiant model.
对内燃机缸盖系统的振动激励及表面振动信号的特性进行分析，建立了缸盖系统的振动模型。
This paper analyses the properties of the excitation and response of an engine cylinder head system and establishes the vibration model of the cylinder head system.
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