高性能基音检测新方法

本基音检测方法是利用汉语语音结构特点，以主循环为基本概念，在时域上处理确定浊音音段的基音，而对清浊不明晰的音段，从时、频域两方面进行基音估算，并设计了基音选择逻辑和清浊音判断逻辑。实验结果表明，本方法的性能明显优于大多数流行的基音检测器，且计算速度快，是自相关方法和倒谱法的４倍和８倍。

A HIGH PERFORMANCE PITCH DETECTION NEW ALGORITHM

This paper presents a new pitch detector (NPD) by using the structure information of Chinese syllables. NPD first calculates a pitch period through a time_domain principle cycle piker and the estimate is checked by some criterion to ascertain whether it is the true one or not. If the estimate is suspected, a complicated procedure is carried to get a reasonable estimate. Thus, NPD automatically focuses on unvoice/voice ambiguous sections of speech signal and low energy voiced speech. Experimental results shows that the method has good performance for five error measurements. As to speed, NPD runs 4 and 8 times faster than AUTOC and CEP separately.