一种适用于移动终端的具有紧凑型麦克风阵列的新型广义旁瓣消除器

2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) Pub Date : 2014-05-04 DOI:10.1109/ICASSP.2014.6853711

A. Sugiyama, Ryoji Miyahara

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引用次数: 9

摘要

本文提出了一种适用于移动终端的采用紧凑型传声器阵列的新型广义旁瓣对消器。该固定波束形成器(FBF)的输出通过新引入的具有辅助输入信号的去相关单元进一步处理，以改善FBF在低频时较差的干扰抑制能力。去相关单元的输出作为自适应阻塞矩阵的参考信号，作为多输入对消器的输入。由于去相关单元和FBF抵消或抑制了低频和高频分量，从而获得了较好的输出信号质量。输出信号对比证实，新波束形成器的干扰消除能力提高了约12 dB。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A new generalized sidelobe canceller with a compact array of microphones suitable for mobile terminals

This paper proposes a new generalized sidelobe canceller with a compact array of microphones suitable for mobile terminals. The output of the fixed beamformer (FBF) is further processed by a newly introduced decorrelation unit which has an auxiliary input signal to improve poor interference suppression of FBF in low frequencies. The output of the decorrelation unit is used as the reference signal for the adaptive blocking matrix and the input for the multi-input canceller. Because low and high frequency components are cancelled or suppressed by the decorrelation unit and FBF, better output-signal quality is obtained. Output signal comparison confirms approximately 12 dB higher interference cancellation by the new beamformer.

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2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

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