noise background

• 噪声背景,声底数值

noise background的用法和样例：

例句

1. Wavelet filtering and averaging method are used to extract the weak VEP signal from strong background noise.
   采用累加平均和小波滤波提取强噪声背景下微弱的视觉诱发电位。
2. In the presence of noise, it is difficult to restore exactly a signal distorted by a system having static,invertible, nonlinear characteristics.
   在噪声背景下，要想准确地恢复那些发生了非线性畸变的信号，通常是很困难的。