frequency pushing 中文意思是什麼
frequency pushing
解釋
頻率推進-
The key components in laser gyro is he - ne ring laser, and the reciprocal action theory between light and medium is the base in studying the ring laser, use the lamb half classical theory, and on the base of density matrix theory, the optical brounch equation was established, which described the movement of amplifying medium atom in the ring syntonic cavity, and according to the medium polarize theory the self consistent equations was deduced, which describe the light intensity and phasic of the counter - propagating wave. on the basis of this equations, adopted the simulation software matlab and virtual instrument programming language labwindows / cvi, we can do some simulated experiments in study the phenomenas such as amplify and dispersive characteristic of medium, mode pushing effection, burned hole effection and pattern competition, lock - in of frequency and the characteristic of light intensity and phasic of the counter - propagating wave in laser gyro
激光陀螺的核心部件為he - ne環形激光器，而掌握光與介質的相互作用理論是研究激光器的關鍵，採用拉姆半經典理論為主，在密度矩陣理論的基礎上，推導環形諧振腔中描述he - ne氣體增益介質原子運動的光學布洛赫方程，運用介質極化理論得出描述激光陀螺反向行波的光強、位相所滿足的自洽場方程組，在此基礎上，運用matlab模擬軟體和虛擬儀器編程語言labwindows / cvi ，對激光陀螺中的介質增益色散特性、頻率牽引效應、燒孔效應及模競爭、閉鎖效應及環激光的光強和相位特性進行模擬試驗研究，並且運用全量子理論，對激光工作原理進行分析，得出二能級系統單模輻射場的光子數密度分佈，得出激光場的光子統計分佈，模擬激光場的動態建立過程。 -
The wire drawing process adopts the flat membrane pushing out method to produce and weave wire, this machine is controlled by frequency conversion, feed in raw material automatically, and change the network automatically
一拉絲工序採用平膜擠出法生產編織絲，該機由變頻控制，自動加料自動換網。 -
At last the audio - visual filter can get and regroup the pcm audio data which transformed into the time - frequency signals by the fft. at the same time the power spectrum can be displaying on the windows by using the win32 api functions. finally the test of this system shows the processes about transport stream of receiving in the collecting card, pushing in the bridge, separating in the parser, displaying in the audio - visual filter are satisfied with the data rata at the server
音視頻效果filter內部通過獲取解碼后的pcm格式數據，並利用緩沖管理器對這些數據進行重新分組，然後對分組后的數據進行fft變換將時域信號變換到頻域之中，同時對變換后的數據作數學處理后得到其功率值，最後利用api畫圖函數對這些功率值進行了實時的特殊效果顯示。
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