The following is a partial list of lc highpass filters and their specifications that we have produced 以下為生產(chǎn)過的lc高通濾波器部分產(chǎn)品規(guī)格。
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(xiàn)帶通、低通和高通濾波功能
It gives assistance to improve efficiency of the multiple frames accumulation . by analyzing the merits and demerits of several kinds of preprocessing , such as highpass filtering , median filtering , tophat transformation in mathematical morphology and wiener filtering , the local singularity filtering based on improved susan principle has been given , and it has a high power to raise the probability of target detection in single frame 良好的預處理將提高后續(xù)的多幀積累的效率,對比常用的幾種預處理算法,如高通濾波、中值濾波、數(shù)學形態(tài)學的tophat濾波、維納濾波等方法的優(yōu)點和不足,提出了一種改進的susan濾波器? ?區(qū)域奇異性濾波,該濾波方法對于提高單幀檢測概率有很好的功效。
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(shè)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仿真設(shè)計;設(shè)計并制作了無源lc低通和高通濾波器,測試了它們的性能;并對分割濾波器在系統(tǒng)中的應(yīng)用進行了計算機仿真。
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 其核心部分采用altera公司的ep1k100qc208芯片,構(gòu)造專用處理功能,實現(xiàn)了直方圖統(tǒng)計與均衡化、高通濾波、 fir濾波、中值濾波等算法。同時提出了自動增益線性變換、基于知識的紅外背景抑制二種新算法,并在fpga中實現(xiàn)。