F0 estimation using SRH based on TV-CAR speech analysis

This paper proposes novel robust speech F₀ estimation using SRH (Summation Residual Harmonics) based on TV-CAR (Time-Varying Complex AR) analysis. We have already proposed robust F₀ estimation based on the TV-CAR analysis in which weighted auto-correlation for complex residual signals is used as the criterion. In the SRH method, the criterion is calculated from LP residual signals. The criterion is summation of residual spectrum value for harmonics. In this paper, we propose SRH-based F₀ estimation based on the TV-CAR analysis, in which the criterion is calculated from the complex AR residual. Since complex AR residual provides higher resolution of spectrum, the criterion might be effective for F₀ estimation. The experimental results demonstrate that the proposed method performs better than conventional methods.