n. varactor
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主要研究了几种常见的自适应噪声抵消算法，并通过理论分析，提出了变步长的并行LMS算法作为抗噪声送话器的自适应滤波算法。
Some algorithms of adaptive noise cancellation are discussed. As adaptive filter algorithms of anti-noise speaker, the variable step size parallel LMS algorithms is put forward by theory analyse.
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