The echo canceller includes an adaptive finite impulse response filter that generates an adaptive filter weight vector 此?音消除系統(tǒng)由一適應(yīng)性有限脈沖響應(yīng)濾波器所組成,它能產(chǎn)生一組適應(yīng)性濾波器權(quán)值向量。
3 . an improved algorithm directly designing the fir ( finite impulse response - . fir ) filter fan to realize time domain wcbb is presented 提出了通過直接設(shè)計fir ( finiteimpulseresponse : fir )濾波器組來實現(xiàn)時域恒定束寬波束形成器的改進方法。
Fir ( finite impulse response ) filter is one of the basic algorithms for digital signal processing , which is a kind of important lti discrete - time system , widely used in acoustic processing and image processing area Fir ( finiteimpulseresponse )濾波器是數(shù)字信號處理的基本算法之一,是一類較為重要的線性時不變系統(tǒng),廣泛應(yīng)用于聲音、圖像處理等現(xiàn)代通信技術(shù)中。
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(xiàn)場環(huán)境中,背景干擾主要是周期性的窄帶,本文利用硬件描述語言( vhdl )設(shè)計了一個多帶fir有限沖擊響應(yīng)濾波器。應(yīng)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干凈的信號。
A proper t - s fuzzy model is adopted to describe the complex nonlinear system . based on the method of local linearization , the idea of generalized predictive control ( gpc ) and the definition of finite impulse response are utilized to design the novel control strategy . the new method not only is different from the common predictive pid control , but also solves the problem that the system ' s order is restricted in the reported papers 該方法采用ts模糊模型來描述復(fù)雜的非線性系統(tǒng),同時在局部線性化基礎(chǔ)上結(jié)合廣義預(yù)測控制的思想和有限脈沖響應(yīng)濾波器的定義,提出了一類新型的模糊預(yù)測pid控制器的實現(xiàn)方法,該方法不僅有別于一般的預(yù)測pid控制器的設(shè)計,而且解決了一般預(yù)測pid控制器設(shè)計當(dāng)中對系統(tǒng)模型階次的限制問題,從而將其推廣到了一類更廣泛的系統(tǒng)。
The dynamic matrix control algorithms based on finite impulse response are studied . the model errors are defined in the form of upper and lower bound and the error square sum of impulse response coefficients of single - input / single - output systems . the robust stability conditions are proposed for closed - loop systems using dmc in the form of lmi , which can assure the closed - loop system using dmc algorithm to be asymptotically stable , when the coefficients of characteristic polynomial do n ' t satisfy jury ' s dominant coefficient lemma 浙江大學(xué)博士學(xué)位論文4 .研究了基于脈沖響應(yīng)模型的動態(tài)矩陣預(yù)測控制田mc )算法,針對單輸入、單輸出系統(tǒng)可能出現(xiàn)的預(yù)測模型誤差,分別以脈沖響應(yīng)系數(shù)上下界和脈沖響應(yīng)系數(shù)誤差平方和的形式對預(yù)測模型的模型誤差進行定義,根據(jù)該定義以線性矩陣不等式的形式分別提出了閉環(huán)系統(tǒng)魯棒穩(wěn)定判據(jù),當(dāng)閉環(huán)多項式系數(shù)不能滿足j切嘆主系數(shù)定理的情況下仍能保證系統(tǒng)閉環(huán)穩(wěn)定。
百科解釋
In signal processing, a finite impulse response (FIR) filter is a filter whose impulse response (or response to any finite length input) is of finite duration, because it settles to zero in finite time. This is in contrast to infinite impulse response (IIR) filters, which may have internal feedback and may continue to respond indefinitely (usually decaying).