nlms 中文意思是什麼

nlms 解釋
歸一化最小二乘
  1. The improved algorithm is combined with normalized least - mean - square ( nlms ) alg orithm. computer simulations are presented detailedly to show the algorithm exhibits excellent convergence, tracking capability, as well as lower ber

    改進演算法結合了歸一化最小均方（ nlms ）演算法，模擬結果表明改進演算法具有良好的收斂性、跟蹤性能及較低的誤碼率。
  2. 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。
  3. First of all, the characteristics of different adaptive algorithms and equalizers are theoretically researched. then digital microwave communication system model is build by simulink. based on this model, the convergent behavior and bit error rate performance of three equalizers ( nlms, kalman and rls ) are compared in multi - path fading channel

    為了達到這個目的，首先需要從理論上對各種自適應均衡演算法以及自適應均衡器的特性進行深入研究;然後利用simulink建立接近實際環境的數字微波通信系統，在多徑衰減通道環境下比較了三種基帶均衡器（ nlms ， kalman和rls ）的收斂特性以及系統誤碼特性，並比較了nlms基帶均衡器和通帶均衡器的性能。
  4. The implementation of such a system is extremely complicated due to three factors : the impulse response of a lrm system have a duration of several hundred milliseconds, the system has to be adaptive, and the adaptation has to be performed with a speech input the traditional adaptive algorithms such as lms and nlms can not obtain the satisfied result in the real - time acoustic echo cancellation processing

    但由於聲回授通道的特殊性和復雜性，普通的自適應演算法無法滿足要求，必須採用一些十分復雜的演算法，這樣一來，實時性的問題變得十分突出。快速lms newton演算法的提出，給自適應聲回波對消問題的解決開辟了新的途徑。該演算法集lms演算法的簡單易行性和newton演算法的快收斂性為一體，是一種非常有應用前景的自適應演算法。
  5. A brief introduction of adaptive algorithm. the modules of adaptive algorithms are created in system view such as lms, nlms, and ndlms. etc

    自適應算分析研究，在systemview中建立了lms 、 nlms 、 ndlms等多種自適應演算法的模擬模塊。
  6. In this paper, an echo canceller based on nlms algorithm and geigle algorithm is implemented on tms320c5402 digital signal processor ( dsp )

    本文採用tms320c5402dsp實現了基於nlms演算法和geigle演算法的回波抵消器。
  7. In chapter 2, many kinds of adaptive filter algorithms are discussed. this section analyzes the least mean squares ( lms ), normalized lms ( nlms ) and recursive least squares ( rls ) algorithms, and evaluates their performance as acoustic echo canceller

    分析了最小均方誤差（ lms ）演算法、歸一化的最小均方誤差（ nlms ）演算法和遞歸的最小二乘（ rls ）演算法，並且結合聲回波抵消演算法評估了它們的性能。
  8. Compared with lms, the normalized lms ( nlms ) and the decorrelated lms ( dlms ) has the faster convergence rate, the stronger stationary and the lower complexity

    但是，與lms演算法比較， nlms與dlms演算法有更快的收斂速度、更好的穩定性和更低的計算復雜度。
  9. In order to further reduce the computation complexity and improve the convergence behavior, many sorts of subband filter algorithms are depicted in chapter 3. finally, associated with nlms algorithm, the suband nlms ( snlms ) algorithm is proposed

    為了進一步降低聲回波抵消演算法的計算復雜性和改善其收斂特性，在第三章中，討論了各種子帶濾波演算法，比如dft子帶和fir子帶等。
  10. So the nlms is selected for the adaptive algorithm of main filter and dlms is for slave filter

    因此，選取nlms演算法作為mf的自適應演算法， dlms演算法作為sf的自適應演算法。
  11. Conclusions can be made that nlms equalizer is the best among three equalizers in terms of convergent stability and calculating complexity, kalman equalizer is the best among three equalizers in terms of bit error rate

    模擬試驗結果表明，在這三種均衡器中，從收斂穩定性和計算復雜度上來看最適合的是nlms線性均衡器;從系統誤碼率上來看，最適用的是kalman線性均衡器，其次是nlms線性均衡器。
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