| 各种速率矢量和激励线性预测（VSELP）编码器的实现 |
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| 引用本文： | 丘晖 刘波涛. 各种速率矢量和激励线性预测（VSELP）编码器的实现[J]. 北京理工大学学报, 1997, 17(6): 780-784 |
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| 作者姓名： | 丘晖 刘波涛 |
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| 作者单位： | 北京理工大学电子工程系 |
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| 摘 要： | 研究并改进了矢量和激励线性预测，语音编码器，介绍了８ｋｂｉｔ／ｓＶＳＥＬＰ编码方案的实现及在此基础上利用矢量量化ＬＰＣ参数，减少激励码本数和子块分裂等方法；改进的６．４ｋｂｉｔ／ｓ，４．８ｋｂｉｔ／ｓ及２．４ｋｂｉｔ／ｓ ＶＳＥＬＰ的方案和结果。
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| 关 键 词： | 激励线性预测 矢量量化 语音编码器 语音合成 |
Implementation of VSELP Vocoder of Various Bit Rate |
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| Qiu Hui Liu Botao Kuang Jingming. Implementation of VSELP Vocoder of Various Bit Rate[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 1997, 17(6): 780-784 |
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| Authors: | Qiu Hui Liu Botao Kuang Jingming |
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| Abstract: | Vector sum excited linear predictive speech coding was studied and enhanced.Presented were the algorithm design and implementation of the VSELP coding at 8kbit/s,and those enhanced at 6.4kbit/s,4.8kbit/s and 2.4kbit/s via vector quantization of LPC parameter,reduction of excitation codebooks and sub block splitting etc.The informal listening showed,that the reconstructed quality of speech (QOS) at 4.8kbit/s and above were not obviously worse than that at 8kbit/s,and of good naturalness intelligibility,but the QOS at 2.4kbit/s was perceivably worse than that at 8kbit/s. |
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| Keywords: | vector sum excited linear prediction speech coding vector quantization |
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