消波濾波器 的英文怎麼說
中文拼音 [xiāobōlǜbōqì]
消波濾波器
英文
wave cancellation filter- 消 : 動詞1 (消失) disappear; vanish 2 (使消失; 消除) eliminate; dispel; remove 3 (度過; 消遣) pa...
- 波 : Ⅰ名詞1 (波浪) wave 2 [物理學] (振動傳播的過程) wave 3 (意外變化) an unexpected turn of even...
- 濾 : 動詞(除去液體雜質) filter; strain
- 器 : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
- 濾波器 : [電子學] electric filter; (electric) wave filter; filter
-
Thirdly, two kinds of the methods to improve the performance of filter stopband has been discussed. these methods are used to cleared up the influence of the parasitical passband. through the simulation and test result shows that these methods " s performance is expected
第三,論了2種對濾波器阻帶抑制進行改善的方法,以消除寄生通帶的影響,通過模擬和實際製作濾波器的測試結果。Section ii describes the design approach and implementation of speech module on mcf5249 coldfire core. the speech codec optimizes g. 729a codes and added voice activity detection of g. 729b to save bandwidth ; the implementation of acoustic echo cancellation uses nlms algorithm and it can reduce echo though designing adaptive fir filter and speech detector ; the dtmf and cpt generate signal using two second order digital sinusoidal oscillators and detect signal by picking up the frequency information. but only get the frequency information is not enough in cpt detector, this thesis introduces a method
其中對語音編解碼器的設計採用優化g . 729a代碼達到設計要求,並在此基礎上加入g . 729b的靜音檢測模塊,以進一步降低網路傳輸帶寬;對回聲消除器的設計採用nlms演算法,通過設計自適應fir濾波器和語音檢測器達到回聲消除目的;對雙音多頻設計,信號發生端採用構造靜態參數表並通過二階正弦振蕩器產生信號,信號檢測端提取頻率信息以檢測信號;對呼叫進程音設計,除了類似雙音多頻的信號發生及頻率檢測設計外,還需要檢測信號持續時間,作者設計了一種基於匹配狀態表的方法以檢測信號持續時間。The algorithm can not only eliminate the influence of the cumulative errors of the photoelectric code recorder, but also it can satisfy the requirement of the real - time control. a direct inverse model controller of fuzzy neural network with changeable structure based on takagi - sugeno inference is presented and it is used to the motion control of mobile robot. in order to avoid the obstacles successfully, detection results from ccd and ultrasonic sensors are fused by a fuzzy neural network, which acts as an avoidance controller
包括移動機器人的融合自定位問題:移動機器人利用光電編碼器進行自定位,同時用擴展卡爾曼濾波器融合多個超聲波傳感器的測量值,採用回朔演算法將融合值用於復位光電編碼器,消除了光電編碼器累積誤差的影響,並能滿足實時控制的要求:並提出一種基於takagi - sugeno模型的變結構模糊神經網路直接逆模型控制器,並應用於移動機器人的運動控制;利用模糊神經網路避障控制器融合ccd攝象機與超聲波傳感器探測到的環境信息,以實現機器人的安全避障。Adaptive noise cancellation by multirate filter bank
多解析度濾波器組在自適應噪聲消除中的應用The echo canceller includes an adaptive finite impulse response filter that generates an adaptive filter weight vector
此?音消除系統由一適應性有限脈沖響應濾波器所組成,它能產生一組適應性濾波器權值向量。Because period narrow band signals are the main part of background noises, this thesis uses hardware description language to design a multi - band finite impulse response filter ( fir ) and downloads the program into filed programmable gate array to eliminate the period narrow - band interferences in the background noises
3 )在現場環境中,背景干擾主要是周期性的窄帶,本文利用硬體描述語言( vhdl )設計了一個多帶fir有限沖擊響應濾波器。應用到可編程邏輯器件中,消除了背景噪聲中的周期性干擾,為信號的進一步處理提供盡可能幹凈的信號。Nanc has two adaptive filters : a main filter ( mf ) and a subfilter ( sf ). the signal - to - noise ratio ( snr ) of the input signals is estimated using the sf
該自適應噪聲抵消系統由主自適應濾波器( mf )與分自適應濾波器( sf )組成。Computer simulation results show that the proposed algorithm reduces the signal distortion and the reverberation which are caused by misadjustment errors in the adaptive filter and the correlated component of the speech in the reference signal compared with a conventional adaptive noise canceller ( anc )
模擬結果證明nanc演算法有效克服了影響傳統自適應噪聲抵消系統( anc )性能的一些瓶頸,如兩輸入中的非相關噪聲,參考輸入中的信號成分與自適應濾波器失調誤差而產生的信號失真、回響等情況。Secondly the detection precision is only related to the synchronization phase but not to the amplitude of the mainline voltage because that it uses the optimized pulses synchronous with the mainline voltage as modulation signals. thirdly it decreases the requirement of the input low pass filter and eliminates the error resulting from the direct component and even harmonics of load current. the most significant merit is that it can eliminate the effect of a few low order odd harmonics and the detecting circuit is easy to be implemented
模擬和實驗結果表明該方法的主要優點有:不需使用乘法器進行信號調制,調制信號採用與電網電壓同步的優化特定脈沖,其檢測精度只與同步相位有關,而與電網電壓幅值無關;降低了對輸入低通濾波器的通頻帶要求,直流和偶次諧波分量對檢測精度沒有影響;突出的優點是可以消除有限個低奇次諧波對檢測結果的影響。The innovations consist of : synthetically restraining the filter ' s divergence, as effectively improved the filter ' s numerical stability ; a parallel filter structure is creatively designed to eliminate system biases ; and sprt method is used to control the adjustment of the noise statistics, so as to ameliorate the tracking performance of time - variant noises
對常規的次優遞推sage自適應濾波器進行了改造,包括:對濾波結果發散進行綜合抑制,提高了濾波器的數值穩定性;採用并行結構,消除了結果偏差;應用sprt控制調整,增強了濾波器的動態跟蹤能力。Compared with the traditional methods of artifacts elimination, ica, a kind of spatial filter, does not be restricted by the case of spectrum overlapping, and have a good reservation of useful detail signals
此外, ica這種空間濾波器不受信號頻譜混迭的限制,消噪的同時能對有用信號的細節成分做到很好的保留,很大程度上彌補了時頻域方法的不足。By changing the multiple time - varying fading factors of the strong tracking filter, mstkf switches between kalman filtering and strong tracking filtering
通過直接改變強跟蹤濾波器的多重時變漸消因子, mstkf在卡爾曼濾波和強跟蹤濾波兩種工作狀態之間切換。Simulative results prove that these algorithms are effective to improve the orientation precision. at the end of the paper, we apply the kalman filtering to gps / dr and gps / ins and obtain preferably results
在此基礎上,就如何提高濾波器的動態性能作者提出了改進演算法,即自適應卡爾曼濾波演算法、帶漸消因子的優化演算法及改進的優化演算法,並分別進行了模擬分析。Through theoretic reckoning and simulating analyzing, several control strategies for shunt apf were compared and chose ip - iq arithmetic of the instantaneous reactive power theory control strategy as the right scheme to produce the instructing current. based on it, some new control arithmetic was subjoined to suppress the resonance in system and balance the dc side capacitor voltage. two topologies of main circuit were compared and chose the three - phase voltage - source converter with a split - capacitor as its main circuit structure
通過理論計算和模擬分析,比較了並聯型apf的幾種控制策略的優點和缺點,從中選擇瞬時無功理論控制策略i _ p - i _ q計算方式為指令電流產生的演算法,並在此基礎上增加了抑制系統諧振和平衡直流側電容電壓的控制;比較了並聯型apf主電路的兩種常見形式,從中選擇了三相電壓型變流器的主電路形式;算出適合該apf的直流側電容和出線電感的參數;設計出能有效消除apf產生的高次諧波的高通濾波器。Two generating methods of compensation current are also proposed for the purpose of eliminating detuning or limiting harmonic voltage contents, in which the compensation current is the weighted superposition of filter harmonic currents or voltages and the regulating factor
針對消除失諧或限制諧波電壓含量的不同控制目標,提出了諧波磁通補償電流的兩種生成方法,補償電流分別是濾波器電流或母線電壓中各次諧波分量與調節系數的加權合成。The self - adaptable filter of eliminating the disturbance of industry frequency
消除工頻干擾的自適應濾波器The paper designs a more lpf and a numberical filter to eliminate the error, and a frequency tracing tache because system frequency fluctuates ceaselessly. this guarantes synchronization sampling
為了消除頻率混疊帶來的誤差,專門設計具有較好性能的低通濾波器和數字濾波器;由於系統頻率波動性,設計有硬體電路組成的頻率跟蹤環節,最終實現采樣周期和信號周期同步。We can reduce the isi and noise by elaborately designing transmitting filter and the receiving filter when the channel is known and unaltered. however, the factual channel is time - varying and not known entirely. so the isi is always existent
在通道特性已知且恆定的情況下,通過精心設計發送和接收濾波器就可以消除碼間干擾和使噪聲的影響最小,但實際通道既不可能完全知道,也不可能恆定不變,系統碼間干擾總是存在。For the problem in controlling active suspension, the lms control method is studied deeply. the results show there are the coupling channel and error channel in control system of vibration. by decoupling filter and error compensation filter designed, the effects of the two key problems are minimized
在充分分析控制系統中禍合通道及誤差通道的基礎上,通過試驗建立了去禍濾波器和延遲補償濾波器,消除了lms自適應控制器輸入信號中振動禍合通道的影響以及控制系統中誤差延遲通道的影響。Use the import part of an apparatus and strict technique to make sure the quality. use the technology of dsp digital shift frequency, and adopt high speed of a d, d a switch electrocircuit
反饋消除技術,自動尋找反饋嘯叫頻點,液晶顯示嘯叫頻率,並自動形成數字濾波器,消除嘯叫頻率,能有效提升話筒增益分享友人