| 基于浮点DSP的PCM与CVSD相互转换的算法 |
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| 引用本文： | 秦传波,黄国强,江太辉. 基于浮点DSP的PCM与CVSD相互转换的算法[J]. 五邑大学学报(自然科学版), 2008, 22(2): 46-51 |
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| 作者姓名： | 秦传波 黄国强 江太辉 |
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| 作者单位： | 五邑大学信息学院,广东江门,529020 |
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| 摘 要： | 研究了16kbit／s连续可变斜率增量调制（CVSD）与64kbit／s A律PCM编码相互转换的算法和实现。在基于浮点DSP（TMS320VC33）及现场可编程逻辑器件（FPGA）芯片XC3S400硬件平台上，实现了A律压缩与扩展、CVSD编解码算法、2倍因子抽取和内插滤波，成功解决了PCM与CVSD码制的相互转换问题。
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| 关 键 词： | 数字信号处理器 现场可编程逻辑门阵列 连续可变斜率增量调制 脉冲编码调制 A律压扩 |
| 文章编号： | 1006-7302(2008)02-0046-06 |
| 修稿时间： | 2007-09-12 |
Realization of Conversion between PCM and CVSD Based on TMS320VC33 |
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| QIN Chuan-bo,HUANG Guo-qiang,JIANG Tai-hui. Realization of Conversion between PCM and CVSD Based on TMS320VC33[J]. Journal of Wuyi University(Natural Science Edition), 2008, 22(2): 46-51 |
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| Authors: | QIN Chuan-bo HUANG Guo-qiang JIANG Tai-hui |
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| Affiliation: | (School of Information, Wuyi University, Jiangmen 529020, China) |
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| Abstract: | The digital code conversion algorithm between 16 kbit/s CVSD and 64 kbit/s A-law PCM is developed and has also been realized in this paper. Based on the floating digital processing chip TMS320VC33 and FPGA IC XC3S400, the algorithm completed A-law expansion and compression, CVSD encoding and decoding, decimation filter and interpolation filter with a 2：1 factor. The system has successfully resolved the conversion problem between PCM and CVSD. |
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| Keywords: | DSP FPGA CVSD PCM, A-law compression and expansion |
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