noise background的用法和樣例：
例句
- 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濾波提取強噪聲背景下微弱的視覺(jué)誘發(fā)電位。 - In the presence of noise, it is difficult to restore exactly a signal distorted by a system having static,invertible, nonlinear characteristics.
在噪聲背景下，要想準確地恢復那些發(fā)生了非線(xiàn)性畸變的信號，通常是很困難的。
