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首页> 外文期刊>International journal of speech technology >Development of two-input adaptive noise canceller for wideband and narrowband noise signals
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Development of two-input adaptive noise canceller for wideband and narrowband noise signals

机译：宽带和窄带噪声信号的两输入自适应噪声消除器的开发

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In this paper, the development of the single-stage two-input adaptive noise canceller that proposed by Widrow et al. is investigated. It is shown that the use of multi-stage cancellers instead of a single stage improves the performance of the conventional two-input adaptive noise canceller in a real life high-noise environment. In such environment, the background noise may contain both the wideband and narrowband (sinusoidal) noise components. In this contribution, the wideband noise and sinusoidal noise signals can be significantly suppressed using a new multi-stage adaptive noise cancellation scheme based on adaptive line enhancer (ALE) and Least Mean Square (LMS) filter. The proposed scheme is comprised of two stages. The first stage uses ALE filters, which are used to cancel the sinusoidal noise from the primary and reference input signals, whereas the wideband noise is cancelled using LMS adaptive filter in the second stage. The good performance of the proposed scheme has been verified via real-time implementation on the Texas Instruments TMS320C6713DSK.
机译：本文研究了由Widrow等人提出的单级两输入自适应噪声消除器。被调查。结果表明，在现实的高噪声环境中，使用多级消除器代替单级消除器可以改善传统的两输入自适应噪声消除器的性能。在这种环境中，背景噪声可能同时包含宽带和窄带（正弦）噪声分量。在此贡献中，使用基于自适应线路增强器（ALE）和最小均方（LMS）滤波器的新型多级自适应噪声消除方案，可以显着抑制宽带噪声和正弦噪声信号。提议的方案包括两个阶段。第一级使用ALE滤波器，该滤波器用于消除来自主输入信号和参考输入信号的正弦波噪声，而第二级使用LMS自适应滤波器消除宽带噪声。通过在德州仪器（TI）TMS320C6713DSK上的实时实现，已验证了所提出方案的良好性能。

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