基于归一化互相关函数的基音检测算法

Pitch Detection Algorithm Based on Normalized Cross Correlation Function

本文提出了一种归一化互相关函数基音检测算法（ＮＣＣＦＰＤＡ——ＮｏｒｍａｌｉｚｅｄＣｒｏｓｓ－ＣｏｒｒｅｌａｔｉｏｎＦｕｎｃｔｉｏｎＰｉｔｃｈＤｅｔｅｃｔｉｏｎＡｌｇｏｒｉｔｈｍ），该算法在基音检测主过程的前端和末端加入了有效的预处理和后处理技术，实验分析表明，该方法在一般噪声环境下，基音周期提取和清浊判决具有令人满意的效果。

A normalized cross correlation function pitch detection algorithm (NCCFPDA) is proposed in this paper. The efficient pre processing and post processing technologies are introduced before and after the main pitch determination processes. The experimental analysis show the performance is very satisfactory for pitch extraction and unvoiced/voiced decision with this method under the general background noise.