spectrum n. (pl. -tra ) 1.【物理學】譜,光譜;波譜;能譜,質譜。 2.【無線電】射頻頻譜;無線電(信號)頻譜。 3.【心理學】(眼睛的)余像;殘像。 4.〔轉義〕范圍,幅度;(連續(xù)的)系列。 an absorption spectrum 吸收(光)譜。 a bright line spectrum 線狀光譜。 an optical spectrum 光譜。 a solar spectrum 太陽光譜。 a wide spectrum of opinion 意見的不同幅度甚大。
Using laser raman spectrum parameters as indicators of maturation for organic carbon 應用激光喇曼光譜特征參數反映有機碳質的成熟度
But it is difficult to be realized . the paper proposes a method of frequency domain pairing according to frequency spectrum parameter of lfmcw beat signal 本文則提出一種通過特征參數進行頻域配對消除距離速度耦合的方法,結構簡單,容易實現。
The spectra parameters of these crystals can be calculated by the f-l formula, which show that the crystals are applicable for the tunable laser and femtosecond laser because of their large emission broadband ( fwhm 50nm ) 用f?l公式計算了晶體yb3+的2f7/22f5/2能級躍遷的發(fā)射截面、輻射躍遷幾率、輻射壽命等光譜參數。
Power spectrum parameters, such as the power spectrum dc component . gamma ., half power bandwidth bw and average power . psi . w are transformed to . gamma ., an equivalent half power bandwidth be and an equivalent average power . psi . e, where be is a predetermined constant 頻率軸參數如頻譜的直流部份、平均能量、以及半能量頻寬等,可以利用本發(fā)明所提出之架構將其轉換、等效平均能量、以及等效半能量頻寬,其中等效半能量頻寬的值是一個給定的常數。
After analyzing the result of the experiment and the feature for text-independent recognition, we make a solution to the defects of the system . then long-time spectrum parameter and lpcc or mfcc are blended to be studied in detail to make the feature parameter . using these technologies, a high recognition rate was made 針對單獨使用lpcc或mfcc應用于說話人識別中存在識別率還不夠高的問題,分析了原因,然后又對長時頻譜特征進行了研究,并把長時頻譜特征分別與lpcc和mfcc結合起來共同應用于說話人識別試驗,從而在一定程度上減少了單獨使用lpcc或mfcc運用于說話人識別中存在的問題,提高了系統(tǒng)的識別性能,取得了較好的效果。