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基于线性预测残差倒谱的基音周期检测

, PP. 104-110

Keywords: 基音周期检测,清浊音判决,线性预测(LP),倒谱

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Abstract:

提出一种基于线性预测残差倒谱的基音周期检测算法.该算法对语音信号的线性预测残差信号做倒谱变换,将其作为基音检测特征.并综合残差倒谱峰、短时能量和短时过零率三种特征,构造一个清浊音判决函数,简化清浊音判决过程,提高判决精度.在基音周期检测过程中,根据基音连续原则,提出峰值重定位方法,有效降低基音倍频和半频的错误率.对比实验表明,本文算法的性能不仅较之传统的倒谱方法有明显改善,同时也优于目前效果较好的YIN算法和多尺度小波算法.

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