提出了一种改进的基音检测算法 ,通过最小化重建谐振峰与原始谐振峰之间的误差得到最佳的基音估计 .在基音估计中引入误差控制因子以得到无偏的误差函数 ,同时对基音轨迹跟踪技术作了改进 ,以保证基音轨迹的正确演变 .实验结果表明 ,与 IMBE标准中的基音检测算法相比 ,该方法能提供更正确且平滑的基音轨迹 ,尤其在过渡段能有效地跟踪快速基音变化 ,从而使重建语音具有更好的连续性和主观质量 An improved pitch detection algorithm is proposed to obtain the best pitch estimate by minimizing the error between the reconstructed resonance peak and the original resonance peak.The error control factor is introduced into the pitch estimation to get the unbiased error function, The tracking technique is improved to ensure the correct evolution of the pitch trajectory.The experimental results show that this method can provide a more accurate and smooth pitch trajectory than the pitch detection algorithm in the IMBE standard, Pitch change, so that the reconstructed voice has a better continuity and subjective quality