| 混合码激励／声激励低码率语音编码算法 |
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| 引用本文： | 韦岗,欧阳景正.混合码激励／声激励低码率语音编码算法[J].华南理工大学学报(自然科学版),1994,22(3):24-31. |
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| 作者姓名： | 韦岗 欧阳景正 |
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| 作者单位： | 华南理工大学无线电与自动控制研究所 |
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| 摘 要： | 本文提出了一种混合低码率编码算法。原始语音首先经低通及高通滤波器分解成基带及高带信号，然后对基带信号采用高质量的码激励线性预测编码，对高带信号则采用码率低的改进声激励线性预测编码，以达到高质量低码率。实验结果表明，本算法在码率为４．０ｋｂ／ｓ时，合成语音的质量与传统的４．８ｋｂ／ｓ码激励线性预测编码相当，而计算量只有其１／５，是一种在低码率下可达到高质量的编码方案。
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| 关 键 词： | 信源编码 语音信号处理 言语传递 |
A COMBINED CODE-EXCITED AND VOICE-EXCITED LOW BIT RATE SPEECH CODING SCHEME |
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| Wei Gang, Ouyang Jingzheng.A COMBINED CODE-EXCITED AND VOICE-EXCITED LOW BIT RATE SPEECH CODING SCHEME[J].Journal of South China University of Technology(Natural Science Edition),1994,22(3):24-31. |
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| Authors: | Wei Gang Ouyang Jingzheng |
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| Abstract: | A combined code-excited and voice-excited speech coding scheme is proposed in this paper. In the algorithm, the speech signal is firstly divided into two parts in frequency domain, of which the base-band signal is coded with code-excited linear prediction and the high-band signal is coded with voice-excited linear prediction. The proposed algorithm has lower comPlexity than the original code-excited linear prediction, and can produce satisfactory synthesized speech. |
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| Keywords: | s: source coding speech signal processing speech transimission Supported by the Natural Science Fund of Guangdong Province |
| 本文献已被 CNKI 维普 等数据库收录！ |
