B, no noise tracking method: input power amplifier (RCA), released the CD signal output, check whether there is noise.

没有噪音的跟踪方法：将功放的输入(rca)恢复，解除CD机的讯号输出，检查是否有噪音。

youdao

A modified ULV updating algorithm. is applied to performing noise subspace tracking. The algorithm does not require rank estimation of the correlation matrix, and estimate directly the noise subspace.

使用一种修改的ULV更新算法进行噪声子空间跟踪，该算法不需要相关矩阵的秩估计，直接估计噪声子空间。

youdao

The effect of thermal noise and vehicle dynamics on carrier tracking loop are also analyzed, and the optimal bandwidth of carrier tracking loop is obtained.

并以相位跟踪环路为例分析了热噪声及载体动态性对环路的影响，得出了环路设计的最佳带宽。

youdao

This new research, then, will serve multiple functions: Using specialized sensors, processors, and algorithms, the project team will measure noise in real time, tracking both the noise generated by various pieces of wave energy equipment and general background noise.

FORBES: Wave Energy: The Latest Battleground in the Conservation vs. Innovation Debate