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通过对喉发声机理的物理分析及病变对声喉功能影响的分析，寻找能够客观评价喉发声功能的途径——同步测量发声效率与频域相对谐噪比，将上述两参数结合可较全面地对喉发声功能进行量化评价。
Through the physical analysis of the laryngeal sound mechanism and the analysis of the influence of the lesion on the sound-laryngeal function, looking for a way to objectively evaluate the laryngeal sound function - Simultaneous measurement of the sound emission efficiency and the relative harmonic-frequency ratio in the frequency domain, combining these two parameters can comprehensively Laryngeal sound function of quantitative evaluation.