| 一种基音提取算法 |
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| 引用本文： | 李强,刘亚康,朱学勇. 一种基音提取算法[J]. 电子科技大学学报(社会科学版), 2000, 0(5) |
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| 作者姓名： | 李强 刘亚康 朱学勇 |
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| 作者单位： | 电子科技大学抗干扰通信技术国防重点实验室! 成都 610054，电子科技大学抗干扰通信技术国防重点实验室! 成都 610054，电子科技大学抗干扰通信技术国防重点实验室! 成都 610054 |
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| 摘 要： | 根据基音周期平滑变化的特点，基于语音信号的准周期性进行了语音信号的基音提取。该算法主要针对多带激励模型（ＭＢＥ），采用传统的时域分析法，先用语音信号的相关性进行基音周期的估计，再由分数延迟法提取基音周期，使预测结果更加准确，更具实时性，有利于语音编码与识别。
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| 关 键 词： | 基音 平均幅度差函数 分数延迟预测 语音编码与识别 多带激励 |
An Algorithm of Pitch Prediction |
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| Li Qiang,Liu Yakang,Zhu Xueyong. An Algorithm of Pitch Prediction[J]. Journal of University of Electronic Science and Technology of China(Social Sciences Edition), 2000, 0(5) |
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| Authors: | Li Qiang Liu Yakang Zhu Xueyong |
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| Abstract: | Based on the feature of smoothly varying pitch period and the quasi-periodic structure of voiced speech, an algorithm for pitch prediction is presented. The algorithm mainly aims at multi-band excitation model, which contains two steps: firstly applying AMDF to predict the pitch roughly, then searching it precisely with fractional delays method. The emphasis of the method lies in advancing the prediction precision of the first step. The technique enables a more accurate representation of voiced speech, and achieves real-time operation. The algorithm is availed to speech coding and recognizing. |
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| Keywords: | pitch average amplitude difference function prediction with fractional delays multi-band excitation speech coding and recognizing |
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