"Optimum" filter for speech enhancement using integrated digital signal processors
"Optimum" filter for speech enhancement using integrated digital signal processors
复制标题
使用集成数字信号处理器进行语音增强的“最佳”滤波器
DOI：
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发表时间：
1982
期刊：
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通讯作者：
G. Doblinger
中科院分区：
文献类型：
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作者：
G. Doblinger
提出了一种加性噪声中语音信号的自适应滤波算法。与其它语音增强算法相比，该算法具有很低的计算代价。该算法的效率是通过适当修改的维纳最佳滤波器与滤波器组。由于使用数字勒纳带通滤波器，获得了非常紧凑的滤波器组结构。语音增强系统是用INTEL 2920信号处理器实现的。结果，对于低至-5dB的输入信噪比，频带限制为（300-3.300）Hz的带噪语音信号的质量可以得到改善。
An algorithm for adaptive filtering of speech in additive acoustic noise is presented. In comparison with other speech enhancement algorithms a very low computational cost is required. The efficiency of the algorithm is achieved by proper modifications of a Wiener optimum filter with a filter bank. Due to the use of digital Lerner band pass filters a very compact filter bank structure is obtained. The speech enhancement system has been implemented with INTEL 2920 signal processors. As a result, the quality of noisy speech signals band-limited to (300-3.300) Hz can be improved for input signal to noise ratios as low as -5dB.