统计声学

本文利用混响声场吸声系数α、立体角、平均自由程及壁面吸收声能等统计声学概念，用简单方法导出混响声场吸声系数α与统计能量分析（SEA）损耗因子η之间的关系。

Relation between acoustical absorption coefficient α and loss factor η in reverberant field with statistical energy analysis ( SEA ) was derived using concise statistical acoustical concepts , such as acoustical absorption coefficient α, three-dimension angle , mean free path and surface absorption energy .

总结了耦合空间声场模拟的几种方法：统计声学方法、几何声学方法、波动声学方法等。

Besides , the methods for simulating the sound fields such as statistical modeling , geometrical modeling and wave modeling are summed up in this paper .

以统计声学理论为基础，推导出稳态混响声场内围护结构表面入射声强与混响声强的关系。

In this paper , the relation between the reverberation sound and incidence sound at wail surface in steady-state sound field will be analyzed using statistical method .

Kappa统计分析比较心脏声学造影目测半定量诊断与金标准诊断的一致性。

The consistency between visual assessment diagnosis and gold standards were compared with Kappa statistic .

提出了一种用于连续语音识别和理解的约束匹配方法，该方法的核心是基于句法、语义、构词等知识的引导，以若干种统计特征参数和声学匹配结果作为依据进行匹配路径的模糊决策。

A new constrained matching method is proposed for continuous Chinese speech recognition and understanding . Directed by knowledge of morphology , syntax and semantics , the method utilizes several kinds of statistical parameters and accoustic matching results to make fuzzy strategy for matching paths .