Time-Varying Quasi-Closed-Phase Weighted Linear Prediction Analysis of Speech for Accurate Formant Detection and Tracking
Time-Varying Quasi-Closed-Phase Weighted Linear Prediction Analysis of Speech for Accurate Formant Detection and Tracking
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用于准确共振峰检测和跟踪的语音时变准闭相位加权线性预测分析
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
P. Alku
中科院分区：
文献类型：
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作者：
Dhananjaya N. Gowda;P. Alku
本文提出了一种基于时变准闭相位分析（TVQCP）的语音共振峰精确检测、估计和跟踪的新方法。该方法结合了两种不同的分析方法，即时变线性预测（TVLP）和准闭相（QCP）分析。TVLP通过对线性预测（LP）系数施加时间连续性约束来帮助更好地跟踪共振峰频率。QCP分析是一种加权线性预测（WLP），它通过对误差信号使用精心设计的权函数来提高共振峰频率的估计精度。QCP权函数强调声门循环的闭相区域，并且还向下加权主要激励周围的区域。这导致声门下腔和激励源的耦合减小。自然语音信号的实验结果表明，该方法的性能明显优于流行的工具，如Wavesurfer或Praat中使用的检测和跟踪方法。
In this paper, we propose a new method for accurate detection, estimation and tracking of formants in speech signals using time-varying quasi-closed phase analysis (TVQCP). The proposed method combines two different methods of analysis namely, the time-varying linear prediction (TVLP) and quasiclosed phase (QCP) analysis. TVLP helps in better tracking of formant frequencies by imposing a time-continuity constraint on the linear prediction (LP) coefficients. QCP analysis, a type of weighted LP (WLP), improves the estimation accuracies of the formant frequencies by using a carefully designed weight function on the error signal that is minimized. The QCP weight function emphasizes the closed-phase region of the glottal cycle, and also weights down the regions around the main excitations. This results in reduced coupling of the subglottal cavity and the excitation source. Experimental results on natural speech signals show that the proposed method performs considerably better than the detect-and-track approach used in popular tools like Wavesurfer or Praat.
影响因子：
2.4
作者：
HILLENBRAND, J;GETTY, LA;WHEELER, K
通讯作者：
WHEELER, K