| 一种改进的基音周期检测方法 |
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| 引用本文： | 曾树华.一种改进的基音周期检测方法[J].电声技术,2011,35(4):53-55. |
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| 作者姓名： | 曾树华 |
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| 作者单位： | 湖南铁路科技职业技术学院; |
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| 摘 要： | 提出了一种改进的基于自相关算法的基音周期检测方法,首先对信号进行了预滤波.消除二次谐波的影响.计算自相关系数时使用的是削波后的数据,大大降低了计算复杂度,野波平滑在保持周期的阶跃性的同时去除野波.
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| 关 键 词： | 基音周期检测 自相关 滤波 削波 平滑 |
Improved Algorithm of Pitch Period Detection |
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| ZENG Shuhua.Improved Algorithm of Pitch Period Detection[J].Audio Engineering,2011,35(4):53-55. |
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| Authors: | ZENG Shuhua |
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| Affiliation: | ZENG Shuhua (Hunan Railway College of Science & Technology,Zhuzhou Hunan 412003,China) |
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| Abstract: | An improved pitch detection algorithm based on autocorrelation function is proposed in this paper.The signal is pretreated by band-pass filter,and enters clipping to reduce the effects of second harmonic.The data after clipping is used while calculating the autocorrelation coefficient and the degree of the complex is reduced greatly.The smoothing method maintains the step of pitch and smooth pitch. |
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| Keywords: | pitch period detection autocorrelation filter clipping wave pitch smoothing |
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