| IIR数字粉红噪声滤波器的优化设计 |
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| 引用本文： | 徐小兵,沈勇,邬宁.IIR数字粉红噪声滤波器的优化设计[J].电声技术,2005(12):56-59. |
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| 作者姓名： | 徐小兵 沈勇 邬宁 |
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| 作者单位： | 南京大学声学研究所近代声学国家重点实验室,江苏南京210093 |
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| 基金项目： | 国家自然科学基金（10474046）. |
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| 摘 要： | 提出了用遗传算法优化IIR数字滤波器的传递函数，使其幅频响应曲线的斜率逼近一3dB／oct。用优化得到的数字滤波器对白噪声序列滤波即可获得粉红噪声。试验结果表明，用遗传算法优化得到的IIR滤波器的频响与理想的-3dB/oct曲线吻合得很好。
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| 关 键 词： | 粉红噪声 IIR滤波器 遗传算法 |
| 收稿时间： | 2005-05-19 |
Design of IIR Digital Pink Noise Filter Using Genetic Algorithms |
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| XU Xiao-bing, SHEN Yong, WU Ning.Design of IIR Digital Pink Noise Filter Using Genetic Algorithms[J].Audio Engineering,2005(12):56-59. |
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| Authors: | XU Xiao-bing SHEN Yong WU Ning |
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| Affiliation: | Institute of Acoustics, The State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, China |
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| Abstract: | The genetic algorithms are used to optimize the transfer function of the IIR digital filter so that it's frequency response has the slop of nearly -3 dB/oct. Pink noise could be made by passing white noise through the optimized filter. The result is that the frequency response of the filter optimized using genetic algorithms fits the ideal -3dB/oct curve very well. |
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| Keywords: | pink noise IIR filter genetic algorithms |
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