lowpass 中文意思是什麼

lowpass 解釋
低通濾波器
  1. Systematic design of nth - order multiple loop feedback lowpass filters

    階多環反饋低通濾波器的系統設計
  2. The paper is to design analogue lowpass filtering circuits with high performances. the circuits are used directly as anti - alias filters in an analogue front - end of video decoder ic ( integrated circuit )

    =本文旨在設計高性能的模擬低通濾波電路，用作視頻解碼晶元模擬前端中的抗混疊濾波器。
  3. The following is a partial list of lc lowpass filters and their specifications that we have produced, arranged by center frequency

    以下為生產過的lc低通濾波器部分產品規格（按截止頻率排序） 。
  4. The main works are as follows : 1. the paper systematically describes basic concepts and theories that form the foundation for design of general microwave filters. the topics will cover filter transfer function, lowpass prototype filters, frequency transformations, immittance inverters and the passband insertion loss under the influence of the dissipation of filter elements 2

    現總結如下: 1 .對微波濾波器的設計理論進行系統的分析，闡述了微波濾波器的傳輸函數、低通原型、頻率變換、倒置變換器以及元件損耗對帶內插損的影響等方面。
  5. The mathematic models of sampling and reconstruction are analysed respectively, and an important conclusion is got, that oversampling can decrease high frequence distortion of d / a output signal and the difficulty of designing lowpass filter. as a result the signal quality is improved

    分析了采樣和重構的數學模型，得出了一個重要結論:過采樣可以減少d / a輸出信號的高頻端衰減失真，可以降低低通濾波器的設計難度，從而提高波形質量。
  6. We design the qmf based on the criteria of minimum frequency bandwidth and the qmf that possess linear phase, and give a example of a signal decomposed and restructured. 4. in the research of channel dropping filters, we use 5 rank butterworth filter to approach the digital filter. we design lc unpower netwok and rc power network. we manufacture lc lowpass and highpass filter ， and test their performance ; we simulate the appliance of the channel dropping filters in the system

    4 .在頻帶分割濾波器的設計方法中，用5階巴特沃斯濾波器逼近最小頻寬正交鏡像濾波器，對無源和有源濾波器進行了模擬設計；設計並製作了無源lc低通和高通濾波器，測試了它們的性能；並對分割濾波器在系統中的應用進行了計算機模擬。
  7. The adm system mainly includes a oscillator, a clock generator, an amplifier, a pre - amplif ier, a comparator, an agc ( automatic gain control ), an adm analyzer & synthesizer, a d / a converter and a lowpass filter

    整個系統包括：內置振蕩器，時鐘產生器，放大器，前置運算放大器，比較器， agc （自動增益控制器） ， adm分析綜合器，數模轉換器以及低通濾波器。
  8. Under the research of the characteristic of three classical analog filter with simulation software - matlab, this paper devised lowpass circuit that not only can keep the useful signal out of distortion but also benefits the following sample tache and filter tache

    用matlab分析了三種經典模擬濾波器的濾波性能，設計出了能保持有用信號不失真又有利於後面的采樣和數字濾波環節的低通電路。
  9. The sampling technology is also being explored which including lowpass sampling, quadrature sampling and direct passband sampling and the setting of a / d, sampling rate, data acquisition and selecting filtering parameters. the implementation of each technique is also being discussed

    分別對低通采樣、正交帶通采樣和直接帶通采樣技術中有關a d在系統中的位置、采樣率的確定、信息獲取和濾波參數選取等問題進行系統論述，並討論了各自的技術實現問題。
  10. It can accomplish the contrast reverse transformation, contrast linear enhancement, histogram modification, filter ( lowpass and highpass ), and the writer give two new algorithms which has been realized in fpga, one is automatic gain linear enhancement, the other is complicated background restrain based on common knowledge

    其核心部分採用altera公司的ep1k100qc208晶元，構造專用處理功能，實現了直方圖統計與均衡化、高通濾波、 fir濾波、中值濾波等演算法。同時提出了自動增益線性變換、基於知識的紅外背景抑制二種新演算法，並在fpga中實現。
  11. And then the paper gives the image processing methods used in the geometrical parameter measuring system. according to the process of the image processing, it introduces the following three methods in order : image pretreatment method which consists of the average value of neighbour area and lowpass ; image segmentation method which involves threshold segmentation, edge detection, image thinning and edge connecting ; the image matching method consiting of picking up feature point, matching and rebuilding

    然後給出了在幾何量測量系統中所用到的圖象處理方法。依照圖象處理的過程，先後介紹了圖象預處理的方法，包括鄰域平均法和低通濾波法；圖象分割方法，包括二值化、邊緣檢測、細化以及邊緣連接等；圖象匹配的相關方法，包括特徵點的提取、匹配及重建。
  12. Abstract this paper gives two kinds of single operational amplifer ? current - mode active filter circuits. they can realize lowpass, highpass and ? bandpass without changing circuit topology and element

    摘要提出兩種使用單運放的電流型濾波電路，每種電路均可同時實現帶通、低通和高通濾波功能
  13. After compared lots of literatures and methods, we offer the norm for selecting different filters. that is to say, in arrhythmia analysis, the integer coefficient lowpass filter is adopted, while in heart rate variability analysis, the high pass filter designed by all - pass minus low - pass filter or filter which can remove both baseline wander and 50hz power - line frequency at one time is used

    在對大量文獻進行比較、研究的基礎上，針對不同的臨床應用目的，提出了各種濾波器的選用準則：在心律失常分析中選用整系數低通數字濾波器對原始心電信號進行濾波；在對心率變異信號進行分析時需先用低通濾波器濾波然後再採用全通減低通方法設計的高通濾波器或者一次性濾波器進行濾波。
  14. The paper also analyzes synthetically the effects of some smooth filters prior to image segmentation and indicates that gaussian lowpass filter, a alterable scale filter, is a good choice to establish a balance between the reservation of image details and removal of noise. on the basis of current investigation of actuality and trend of image segmentation at home and abroad, the paper adopts marr operator, called by optimal edge detection to improve greatly efficiency of image segmentation and edge abstract. the sparse edge

    論文在分析當前圖象分割的現狀和趨勢的基礎上，採用被稱為最佳邊緣檢測運算元的marr演算法，使圖象分割和邊緣提取的準確性得到了很大的提高；利用人機交互輔助的方法來搜索已經檢出的稀疏邊緣點，並用最小二乘法擬合這些邊緣點，使裝配間隙寬度的測量的精度和準確性得到了極大的保證。
  15. A novel dgs lowpass filter is used to purify if signal

    中頻引出通過新穎的dgs低通濾波器濾波后輸出。
  16. In the design of w band balanced mixer, if signal is extracted via the fifth port made on the conventional ratrace, and it is sent out through a novel lowpass filter using microstrip stepped - impedance hairpin resonators

    在w頻段單平衡混頻器的研究中，本文在傳統混合環的基礎上引出第五個埠，它連接低通濾波器將中頻輸出。
  17. Based on the results of the theory analysis and computer simulation of ratrace, waveguide - to - microstrip probe transitions, dgs lowpass filter, the structure was designed and manufacture was made. finally, the index of this mixer was measured

    在對所用到的功率混合電路，波導-微帶探針過渡，以及dgs低通濾波器進行理論分析、計算、和計算機模擬的基礎上，製作混頻器，並對設計結果進行了測試驗證。
  18. Based on the testing principle of wheatstone bridge, a simple testing system is set up with two cascaded amplifiers and two cascaded butterworth lowpass filters. the varying voltage is tested by the system as the pressure is changed. experiment data are obtained, which also prove the feasibility of the design and the process flow

    5 .基於惠斯頓電橋的測量原理，利用兩級放大電路和兩級巴特沃思低通濾波電路搭建了一簡單的測試電路系統，成功地檢測出了輸出電壓的微小變化值並得出了一些初步的實驗數據，驗證了晶元設計和工藝流程的正確可行性。
  19. The high frequency matching network mainly used lumped element lowpass network, including the series capacitance, series inductance and shunt grounded capacitance

    高頻匹配網路主要採取集中參數低通形式，串聯部分電感、電容參加匹配，並聯部分對地電容參加匹配。
  20. A method of analyzing of the non - drift all - pole active lowpass filters ' s sensitivity

    無漂移全極點有源低通濾波器的靈敏度分析方法
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