quantized error 中文意思是什麼
quantized error
解釋
量化誤差-
One is to use fourier transformation to convert the source signal from time domain to frequency domain and to discard high frequency harmonious components upwards of 19 ( gb / t14953 - 93 d5. 3 demanding ), then to have static huffman coding to the quantized char array which is composed of reserved direct current component and basic wave and each high frequency " s amplitudes and angles. the other is to use discrete wavelet transformation to convert the source signal from time domain to frequency domain and to set the high frequency coefficients that its absolute value is smaller than the given threshold to zero, then to have dynamic huffman coding to the quantized char array which is composed of multiple, wavelet ' s level, datum length, low frequency coefficients and reserved high frequency coefficients. mass simulinks and analyses under the two circumstances have done to show that data compression ratio is small and the relative error is also small and within the permission of engineering and the compression problem can be solved in theory of measured datum of power system
第一種情況的壓縮方法為：採用傳統的傅立葉變換把原始信號從時間域變換到頻率域，舍棄20次及其以上的高次諧波成分（保證了gb / t14953 ? 93d5 . 3要求） ，然後對保留的直流分量、基波和各次諧波的幅值和相角數據量化后和量化時分別乘以的倍數系數構成一個數組，以字元形式保存，採用靜態huffman編碼對變換數據進行壓縮；採用離散小波變換把原始信號從時間域變換到頻率域，然後對分解得到的高頻系數進行閾值量化處理，對乘以的倍數系數、小波變換的階數、小波變換后的低頻、各級高頻以及原始數據長度、量化后的低頻系數以及保留的高頻系數大小、位置構成一個數組，以字元形式保存，採用動態huffman編碼對這個文件進行壓縮。 -
The quantized lp coefficients are replaced by the unquantized lp coefficients in the frequency domain expression of the feel weighted filter. the error signal has more similar envelope shape, and the hearing effect is better than before because the unquantized lp coefficients have more accuracy than quantized lp coefficients
由於未量化的線性預測系數具有更高的精度，因此，誤差信號通過修正後的感覺加權濾波器以後，具有與語音信號譜更加相似的包絡形狀，從而更好地利用共振峰對誤差的掩蔽效應，達到更佳的主觀聽覺效果。 -
Abstract : on the basis of analyzing the scan error of a pentaprism, the principle of scan error compensation is put forward, and the quantized formulas and applying method of compensating the scan error are presented
文摘:在分析五棱鏡掃描誤差的基礎上提出了誤差補償原理，並給出了量化補償公式及誤差補償原理的實現方法。 -
This paper discusses a new, precise short time interval measuring method that is based on the quantized time delay. it decreases the + - 1 word count error efficiently
本文提出的一種基於量化時延原理的短時間間隔的精確測量方法的新思想，十分有效地減小了1個字的誤差影響。 -
In chapter 4, the performance of asynchronous systems with multilevel spreading codes based on periodical repetition of quantized chaotic time series is presented, focusing on the ds - cdma systems. some computer simulations for four kinds of chaos - based sequences are given to examine the results that chaos - based sequences outperform the classical spreading sequences ( maximum - length and gold sequences ) and the chaos - based sequences from the chevbyshev maps ( k = 3, 7, 11 ) is the best among them. as the result of these optimization effort, two design means toward sequences optimization are obtained, in which one is based on the entropy theory, the other is on minimizing the average possible error
3 、本文的第四章分析了混沌序列的各種統計特性，著重研究混沌序列作為混沌擴頻序列在ds ? cdma系統中的抗擾性能，對不同的混沌擴頻序列和典型的擴頻序列進行了模擬，從模擬結果中可知，混沌擴頻序列的性能可以與典型的擴頻序列媲美，經過優化設計的混沌序列特性優于典型的擴頻序列；在混沌序列中， chebyshev混沌序列（ k等於3 . 7 . 11 … …時）是最佳序列之一。
分享友人