 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 5 | 1/1 | 返回列表 |
| 查看: 3120 | 回復(fù): 5 | |||
| 當(dāng)前只顯示滿足指定條件的回帖，點(diǎn)擊這里查看本話題的所有回帖 | |||
yush087新蟲 (初入文壇)
|
[求助]
核磁信噪比
|
||
| 核磁信噪比怎么計(jì)算？如何更準(zhǔn)確的計(jì)算？ |
回復(fù)此樓» 收錄本帖的淘帖專輯推薦
 NMR&MRI |
» 猜你喜歡
0805求調(diào)劑
已經(jīng)有5人回復(fù)
-
342求調(diào)劑
已經(jīng)有7人回復(fù)
-
調(diào)劑
已經(jīng)有6人回復(fù)
-
一志愿北京科技大學(xué)085601材料工程英一數(shù)二初試總分335求調(diào)劑
已經(jīng)有3人回復(fù)
-
273求調(diào)劑
已經(jīng)有4人回復(fù)
-
339求調(diào)劑
已經(jīng)有3人回復(fù)
-
267求調(diào)劑
已經(jīng)有7人回復(fù)
-
070300化學(xué)279求調(diào)劑
已經(jīng)有11人回復(fù)
-
318求調(diào)劑
已經(jīng)有3人回復(fù)
-
309分085801求調(diào)劑
已經(jīng)有4人回復(fù)
boringboring
新蟲 (初入文壇)
- 應(yīng)助: 1 (幼兒園)
- 金幣: 24.3
- 帖子: 21
- 在線: 4.9小時(shí)
- 蟲號(hào): 2554964
- 注冊(cè): 2013-07-20
- 專業(yè): 波譜分析與成像分析
【答案】應(yīng)助回帖
|
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 depending the peak width) and the integration is the signal. Now, randomly integrate over N noise regions (i.e., the non-peak regions) of 0.1 ppm wide. The average integration is the noise. signal/noise = S/N Some folks like to figure out S/N using peak height of the strongest peak and the height of the noise regions. They will run into argument of peak-to-peak or root-mean-square noise heights. |
3樓2013-07-26 04:37:12
cjzhu
木蟲 (著名寫手)
- 應(yīng)助: 390 (碩士)
- 金幣: 3146.6
- 紅花: 88
- 帖子: 1966
- 在線: 3268.8小時(shí)
- 蟲號(hào): 727004
- 注冊(cè): 2009-03-20
- 專業(yè): 核磁
2樓2013-07-20 10:17:31
4樓2013-07-26 09:58:51
5樓2013-07-26 11:13:48
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 調(diào)劑 +4 | 好好讀書。 2026-03-28 | 6/300 |
|
|---|---|---|---|---|
|
|
[考研] 考研調(diào)劑 +9 | 小蠟新筆 2026-03-29 | 10/500 |
|
|
[考研] 284求調(diào)劑 +9 | 小熊～～ 2026-03-31 | 9/450 |
|
|
|
[考研] 理學(xué)07化學(xué) 303求調(diào)劑 +8 | 睿08 2026-03-27 | 8/400 |
|
|
|
[考研] 277跪求調(diào)劑 +8 | 1915668 2026-03-27 | 13/650 |
|
|
|
[考研] 354求調(diào)劑 +3 | lxb598 2026-03-31 | 4/200 |
|
|
|
[考研] 322求調(diào)劑 +10 | 舊吢 2026-03-24 | 10/500 |
|
|
|
[考研] 081200-11408-276學(xué)碩求調(diào)劑 +4 | 崔wj 2026-03-31 | 4/200 |
|
|
|
[考研] 085600材料與化工329分求調(diào)劑 +5 | 這是有太陽哇 2026-03-25 | 5/250 |
|
|
|
[考研] 334分 一志愿武理 材料求調(diào)劑 +16 | 李李不服輸 2026-03-26 | 16/800 |
|
|
|
[考研] 311求調(diào)劑 +10 | lin0039 2026-03-26 | 10/500 |
|
|
|
[考研] 085404求調(diào)劑，總分309，本科經(jīng)歷較為豐富 +6 | 來財(cái)aa 2026-03-25 | 6/300 |
|
|
|
[考研] 275求調(diào)劑 +15 | Micky11223 2026-03-25 | 20/1000 |
|
|
|
[考研] 一志愿雙一流機(jī)械285分求調(diào)劑 +4 | 幸運(yùn)的三木 2026-03-29 | 5/250 |
|
|
|
[考研] 086000生物與醫(yī)藥調(diào)劑 +5 | Feisty。 2026-03-28 | 9/450 |
|
|
|
[考研] 085600，專業(yè)課化工原理，321分求調(diào)劑 +5 | 大饞小子 2026-03-28 | 5/250 |
|
|
|
[考研] 調(diào)劑考研 +3 | 王杰一 2026-03-29 | 3/150 |
|
|
|
[考研] 086502化學(xué)工程342求調(diào)劑 +6 | 阿姨復(fù)古不過 2026-03-27 | 6/300 |
|
|
|
[考研] 一志愿吉大071010，316分求調(diào)劑 +3 | xgbiknn 2026-03-27 | 3/150 |
|
|
|
[考研] 0703化學(xué)338求調(diào)劑！ +6 | Zuhui0306 2026-03-26 | 7/350 |
|