科学通识与工程精读·英语30篇（1）
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Acoustic Impedance Matching in Mongolian Throat Singing Performance Spaces
蒙古呼麦演唱空间中的声阻抗匹配设计
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Traditional Mongolian throat singing demands precise acoustic impedance matching between performer vocal tract geometry and surrounding steppe topography.传统蒙古呼麦演唱要求歌手声道结构与周围草原地形之间实现精准的声阻抗匹配。
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Nomadic ger encampments orient yurts along north-south axes to exploit natural wind gradients that stabilize harmonic overtones during winter performances.游牧民族的蒙古包营地沿南北轴线布置帐篷，以利用自然风梯度，在冬季演出中稳定泛音。
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The felt-layer thickness and wool-density gradient in ger walls are empirically tuned to absorb frequencies below 80 Hz while reflecting harmonics above 1.2 kHz.蒙古包墙体毛毡层厚度与羊毛密度梯度经经验调校，可吸收80赫兹以下频率，同时反射1.2千赫以上泛音。
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Field recordings from Khövsgöl Province show consistent reverberation times of 1.4–1.7 seconds—within optimal range for overtone clarity without spectral smearing.库苏古尔省实地录音显示混响时间稳定在1.4至1.7秒之间，恰好利于泛音清晰呈现而不致频谱模糊。
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Modern concert venues in Ulaanbaatar replicate this via parametric wall-panel arrays whose porosity profiles are derived from spectral analysis of 37 historic recordings.乌兰巴托现代音乐厅通过参数化墙板阵列复现这一效果，其孔隙率分布源自37份历史录音的频谱分析。
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Such spatial calibration transforms acoustics from ambient condition into an active, culturally encoded signal-processing medium.此类空间校准将声学环境从被动背景转变为主动的、承载文化编码的信号处理媒介。