As you can see from the graphs and images on the noise page of this review the A77 is unequivocally noisier than its competitors both in terms of measured and visiblenoise.
Meanwhile, some noises are added into frequency bands where it is less visible in order to achieve noise smooth of overall reconstructing image.
同时，在不灵敏频带内(如图象边缘区)引入一定噪声以达到整个恢复图象的噪声平滑。
3
The analysis of the (improved) structure shows that the increase of natural vibration frequency is visible, the vibration noise of the shield is suppressed distinctly.