| 一种新型的参量阵扬声器阵列设计与优化 |
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| 引用本文： | 李婷婷,王炳和,林志远.一种新型的参量阵扬声器阵列设计与优化[J].压电与声光,2010,32(1). |
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| 作者姓名： | 李婷婷 王炳和 林志远 |
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| 作者单位： | 武警工程学院,通信工程系,陕西,西安,710086 |
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| 基金项目： | 武警部队军事应用课题基金资助项目 |
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| 摘 要： | 超声传感器阵列指向性决定了参量阵扬声器再现音频指向性的性能.提高超声发射阵的指向性也是实现高指向性低频声波的关键技术之一.基于阵列指向性基本理论及与线列阵组合平面阵进行分析比较,提出了一种球面六边形阵列.仿真试验结果表明,球面六边形阵列扬声器不仅完全消除栅瓣,主瓣宽度也更窄.且采用改进的遗传算法通过幅度加权优化该阵列使其旁瓣级低于-20 dB,进一步优化了指向性性能.
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| 关 键 词： | 球面六边形阵列 指向性 旁瓣级 遗传算法 |
Design and Optimization of a New Parametric Array Loudspeaker |
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| LI Ting-ting,WANG Bing-he,LIN Zhi-yuan.Design and Optimization of a New Parametric Array Loudspeaker[J].Piezoelectrics & Acoustooptics,2010,32(1). |
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| Authors: | LI Ting-ting WANG Bing-he LIN Zhi-yuan |
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| Affiliation: | LI Ting-ting,WANG Bing-he,LIN Zhi-yuan (Dept.of Communication Engineering,China Armed Police Force\'s Engineering College,Xi\'an 710086.China) |
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| Abstract: | The directivity of the ultrasonic sensor array decides the performance of the audio frequency' directivity reproduced by the parametric array loudspeaker.Improving the directivity of the ultrasonic transmitting array is also one of the key technologies for realizing high directivity,low-frequency sound waves.Based on the basic theory of array directivity and comparing with the line transducer array,a spherical-hexagonal array is proposed.The simulation results indicate that the spherical-hexagonal array not... |
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| Keywords: | spherical-hexagonal array directivity minor lobe level genetic algorithm |
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