| 基于FPGA的双通道语音增强系统设计与实现 |
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| 引用本文： | 肖佩霖,张岩. 基于FPGA的双通道语音增强系统设计与实现[J]. 微处理机, 2011, 32(4): 5-8. DOI: 10.3969/j.issn.1002-2279.2011.04.002 |
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| 作者姓名： | 肖佩霖 张岩 |
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| 作者单位： | 哈尔滨工业大学深圳研究生院Soc研究中心,深圳,518055 |
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| 摘 要： | 在数字助听器和小型语音设备的实际应用中,非平稳噪声干扰与自适应方法的收敛过程会造成语音性能下降。为了实际解决该问题,设计了一种新型的实时语音增强系统。该系统基于双通道一阶差分麦克风阵列,同时采用结构分时复用和高效汉宁窗分帧等方法,提高了性能并节约了硬件成本。该语音增强系统可获得3.5db左右的信噪比增益,同时克服了单通道增强系统和自适应方法的局限,并用Verilog语言在FPGA上设计实现该系统。从而在硬件层次上提高了小型语音设备的抗噪性能,为数字助听器或相关ASIC芯片的研制奠定了基础。
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| 关 键 词： | 语音增强 双通道 数字助听器 优化设计 |
Design and Implementation of Dual Channel Speech Enhancement System Based on FPGA |
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| XIAO Pei-lin,ZHANG Yan. Design and Implementation of Dual Channel Speech Enhancement System Based on FPGA[J]. Microprocessors, 2011, 32(4): 5-8. DOI: 10.3969/j.issn.1002-2279.2011.04.002 |
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| Authors: | XIAO Pei-lin ZHANG Yan |
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| Affiliation: | XIAO Pei-lin,ZHANG Yan(Soc Research Center,HIT Shenzhen Graduate School,Shenzhen 518055,China) |
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| Abstract: | In the processing of practically using Digital Hearing Aids and miniaturized speech devices,non-stationary noises and the processing of adaptive convergence will impair speech performance.To deal with these problems,this paper has designed a new real-time Speech Enhancement System.The system uses dual channel first-order differential microphone array,and makes use of time division multiplexing and efficient Hanning windows,so this system can obtain high performance and save hardware cost.The system is able ... |
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| Keywords: | Speech Enhancement Dual Channel Digital Hearing Aids Optimization design |
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