| 影响反声障板增益的因素 |
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| 引用本文： | 郝浩琦.影响反声障板增益的因素[J].应用声学,2011,30(3):187-192. |
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| 作者姓名： | 郝浩琦 |
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| 作者单位： | 杭州应用声学研究所,杭州,310012 |
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| 基金项目： | 国家高技术研究发展专项经费资助 |
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| 摘 要： | 障板的反射系数一般是指声波垂直入射时的反射声波与入射声波的幅值比,不能全面反映障板的使用效果。在实际应用中,障板的实际增益受到障板自身的声特性、换能器到障板的距离、声波入射角度、声波频率等众多因素的影响,反射系数很高的反声障板,实际增益却可能为负。本文使用相对灵敏度级(Relative Sensitivity Level)来衡量反声障板的"真实"增益,论述了相对灵敏度级的计算方法,对影响反声障板增益的因素进行了研究。
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| 关 键 词： | 反声障板 相对灵敏度 反射系数 障板增益 |
Gain influences for a reflection baffle |
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| HAO Haoqi.Gain influences for a reflection baffle[J].Applied Acoustics,2011,30(3):187-192. |
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| Authors: | HAO Haoqi |
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| Institution: | HAO Haoqi (Hangzhou Applied Acoustic Research Institute,Hangzhou 310012) |
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| Abstract: | The reflection coefficient of a baffle,which is the amplitude ratio of reflect wave to vertically incident wave,can not completely represent the effect of the baffle.Therealgain of a baffle is determined by several factors,such as acoustic characteristics of baffle, distance between transducer and baffle,incident angle of acoustic wave,frequencies of acoustic wave,etc.For example,the real gain of a baffle,which has a high reflection coefficient,may be negative.In this paper the Relative Sensitivity Level(Re... |
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| Keywords: | Reflection baffle Relative Sensitivity Level Reflection coefficient Gain of baffle |
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