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-3 dB/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-3 dB/oct曲线吻合得很好。
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.
出处
《电声技术》
2005年第12期56-59,共4页
Audio Engineering
基金
国家自然科学基金(10474046)
