3楼: Originally posted by boringboring at 2013-07-26 04:37:12
In theory, signal-to-noise ratio S/N can be done in the following way.
Process your spectrum, well phase it and correct the baseline.
Locate the strongest peak, integrate over it, (say 0.1 ppm depe ...

5楼: Originally posted by pisceswu at 2013-07-26 11:13:48
noise 不是积分得到的。 理论上你对noise积分，结果就是无限接近于0.

谱图上任何一个点都是有 信号 u 和 噪音 sigma 组成。
在基线位置，信号为0，只剩下噪音。算标准方差可以得到噪音的大小。

最高峰的位置 ...