| 基于WSOLA算法的语音时长调整研究 |
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| 引用本文： | 叶锡恩,张巧文.基于WSOLA算法的语音时长调整研究[J].科技通报,2005,21(5):593-596,611. |
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| 作者姓名： | 叶锡恩 张巧文 |
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| 作者单位： | 宁波大学,电路与系统研究所,宁波,315211;南京大学,近代声学国家重点实验室,南京,210093;宁波大学,电路与系统研究所,宁波,315211;南京大学,近代声学国家重点实验室,南京,210093 |
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| 基金项目： | 浙江省科技厅项目（2003C31078）;南京大学近代声学国家重点实验室资助项目（0107）;宁波市科技攻关项目（20038100l1） |
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| 摘 要： | 目前的PSOLA算法进行时长调整时，其计算量大，很难实现实时变速不变调处理。利用波形相似性来解决语音时长调整的WSOLA算法，实验证明能生成高品质的语音；在算法上高效、鲁棒．可以通过修改调整因子α实现连续范同内的在线语音时长调整。此算法已应用在数字语音教学系统中．具有良好的实时性和高品质语音。
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| 关 键 词： | 信号与信息处理 短时傅立叶变换 时长调整 互相关系数 调整因子α |
| 文章编号： | 1001-7119（2005）05-0593-04 |
| 收稿时间： | 2004-05-26 |
| 修稿时间： | 2004-05-26 |
Study on Time-Scale Modification of Speech Based on WSOLA |
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| YE Xi-en,ZHANG Qiao-wen.Study on Time-Scale Modification of Speech Based on WSOLA[J].Bulletin of Science and Technology,2005,21(5):593-596,611. |
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| Authors: | YE Xi-en ZHANG Qiao-wen |
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| Abstract: | PSOLA, a popular algorithm for time-scale modification, has heavy computation, which is very difficult for onling operation. Waveform similarity is proposed for tackling the problem of time-scale modification of speech, which is called WSOLA algorithm, through experiments produces the high quality speech output, is algorithmically and computationally efficient and robust, and allows for on-ling processing with arbitrary time-scaling actors chosen over a wide con- tinuous range of values. The algorithm has already been used in the tutoring system of the digital speech, having good real-time quality and high quality speech. |
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