The final conclusion is: edge technique has high signal to noise ratio, small statistical errors, large measuring range in high accuracy, and can prevent backgroundnoise in some way.
The effect of the back-groundnoise is effectively rejected due to the bispectral technology.
由于采用了双谱技术，脑电背景噪声的影响得到有效的抑制。
3
Due to its low power spectral density, the direct sequence spread spectrum signal is always submerged with the back-groundnoise, so that it is difficult to reconnoiter the signal.