Noise cancellation using parallel adaptive filters
Noise cancellation using parallel adaptive filters
复制标题
使用并行自适应滤波器消除噪声
DOI：
10.1109/82.136574
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
R. Goubran
中科院分区：
文献类型：
--
作者：
R. B. Wallace;R. Goubran
基于B. Widrow et al.（1975）。结果表明，多个参考麦克风的使用提高了噪声消除器的性能，在一个多路径，多频带噪声环境中常见的汽车。基于参考信号的子带的消除和消除器的结构被示出以提高消除器跟踪非平稳噪声过程的能力。作者比较了各种并行多参考滤波器结构，使用在汽车中记录的噪声表明，一个两级消除器使用预相关阶段，然后是一个波束形成阶段，提供了在电话音频频带的所有频率的降噪，最大降低28 dB，平均降低16 dB。>
The development of adaptive noise cancellers based on the reference microphone approach proposed by B. Widrow et al. (1975) is presented. It is shown that the use of multiple reference microphones improves the performance of noise cancelers in a multipath, multisource noise environment commonly found in an automobile. Cancellation based on subbands of the reference signals and the structure of the canceler are shown to improve the ability of the canceler to track nonstationary noise processes. The authors compare various parallel multireference filter structures using noise recorded in an automobile to show that a two-stage canceler using a precorrelation stage followed by a beamforming stage provides noise reduction at all frequencies in the telephone audio band with a maximum reduction of 28 dB and an average reduction of 16 dB. >