一种频域基频提取新方法

A new pitch determination algorithm in frequency domain

提出了一种基于二值侧抑制网络的频域基频提取方法。即利用二值侧抑制网络对语音的短时谱进行峰值提取，得到包括语音基频及其谐波的线谱，根据谐波间的距离平均值估算出基频．该算法在ＣＯＳＤＩＣ数据库上进行了测试，并与自相关基频提取法和倒谱基频提取法进行了比较．实验数据表明，本算法具有更高的精度和更强的抗噪声性能．

: This paper proposes a novel pitch determination algorithm with binary lateral inhibitionnetwork (BLIN). The procedure of this algorithm is shown as follows. A thread-like spectrum, which iscomposed of the fundamental frequency and its harmonic components, is acquired by applying a BLINto the short time spectrum of the speech signal. Then the pitch is determined by the average intervalof harmonics, which is searched by a flexible strategy. The algorithm is evaluated on COSDIC speechdatabase. For the purpose of comparison, the same results of the cepstrum-and antocorrelaticn-basedpitch determination algorithm are also presented. The results show that the new algorithm is moreaccurate and more robust to white noise than the other two algorithms.