discrete signal 中文意思是什麼
discrete signal
解釋
離散信號-
Taking a view of pure time field, this paper presents dissolvable signals and basic concepts of sampling ; and also gives the very condition of discrete of signal ; this paper uses linear algebra to analysis this kind of signal and then gives some results and relevant deductions ; based on these results, 1 made a further step to analysis some typical band - limited signals in order to proof the coherence of my theory of dissolvable signal to the typical sampling theory ; i made some preliminary study about the feasibility of sampling and recovering of this kind of signal
本文從純時域角度出發，給出了可分解信號及其采樣的基本概念；也指出了信號可離散化的條件；利用線性代數理論給出了對這類信號進行采樣的分析理論及相應的推論；並用這些結論對典型的帶限信號進行了分析，證明可分解信號采樣定理與經典采樣理論的一致性；初步探討了對這類信號的實行采樣與恢復的工程實現問題。 -
This thesis tries to update the cmdsr system to achieve the characters below : real - time, better robust, higher recognition rate, non - special - man. considering the disadvantages of traditional improved spectrum subtraction speech enhancement, this thesis proposes the theory of fuzzy spectrum subtraction based on the fuzzy theory and improved spectrum subtraction speech enhancement ; as for the difficulties of detecting the endpoint of speech signal, the thesis gives the table of initial and the improved parameters, with which we can confirm the endpoints of mandarin digit speech ; the thesis puts forward two - level digit real - time speech recognition system, the first level is based on discrete hidden markov model which is linear predictive coding cepstrum ( lpcc ) and difference linear predictive coding cepstrum ( dlpcc ), the second level is based on formant parameters ; as for the realization of hardware, the thesis depicts the realization of every part of cmdsr based on the tms320vc5402 in detail ; as for the development of software, the thesis gives the software design flow chart of cmdsr, simulates the basic theory with matlab language and gives the simulation results
針對傳統的「改進譜相減法語音增強」參數設定單一、環境適應能力差的缺點，提出了一種利用模糊理論和「改進的譜相減法」結合的「模糊譜相減法語音增強」 ;針對語音信號端點檢測困難的特點，通過matlab模擬試驗，給出了能夠準確確定數碼語音端點的初始和改進參數表;提出了利用基於線性預測編碼倒譜參數和差分線性預測編碼倒譜參數相結合的離散隱含馬爾可夫模型進行第一級識別、利用共振峰參數進行第二級識別的兩級漢語數碼語音識別系統，在保證系統實時性的同時，實現連接漢語數碼語音識別系統識別率的提高;在硬體實現上，詳細闡述了基於tms320vc5402的連接漢語數碼語音識別系統各部分硬體設計;在軟體開發上，給出了連接漢語數碼語音識別的軟體設計各部分的流程圖，並對各部分進行了matlab模擬，並給出了模擬結果。 -
Output can be obtain, next we use our designed the wavelet soft threshold to select result of the wavelet transform, finally, we give the selected result reversal wavelet transform. it is obvious : the wavelet soft threshold is important to improve the quality of the gray image processing. i give the donoho wavelet soft threshold a modified value method, which has a relation with ratio of signal - noise. i made full use of discrete hop field single feedback neural network, and nonlinear steady of automatic system at last, i obtained a steady limited ring, give the energy function an order differential a optimal
我的思路是：改造現有圖形結構，先建立能反映信噪比大小且含待定參數k的表達式，然後通過離散型h0pfi舊單層反饋神經網路，再結合前邊的混合濾波器構成一個非線性控制系統，寫出對應的網路函數，利用相平面法和李雅普諾大穩定性的判據，得到一個穩定的極限環，從而確定出參數卜的范圍，進而再對原來的小波軟閾值進行修正，用修正後的值作為小波閾值。 -
Fast algorithms of both discrete and orthonormal wavelet and wavelet packet coefficient are diagrammatized to be introduced. daubechies wavelet is applied to help to discuss the application and test on signal filtering and noise reduction with the principle and threshold implementation ; the basic principle to pickup the fault characteristics is introduced mainly about the relations between the maximum module and signal saltation point and how to characterize the saltation point with lipschitz exponent
展示了離散正交小波變換的mallat快速演算法和小波包系數分解的快速演算法；重點應用daubeches小波探討了小波變換在信號濾波去噪中的應用和實驗，闡述了其基本原理和通過閾值化處理實現濾波的具體方法；探討了用小波變換進行故障特徵提取的原理，說明了小波變換模極大值和信號突變點之間的關系以及怎樣用李氏指數來表徵突變點的性質。 -
This article elaborated the code technology in the correspondence application, discussed in the discrete signal code process function, as well as code technology security use and error correction function
摘要本文論述了編碼技術在通信中的應用，討論了離散信號的編碼過程中的作用，以及編碼技術的保密用途和糾錯功能。 -
This thesis has studied the dynamic features of a class of the discrete - time neural network model of two neurons, such as the convergence and periodicity and etc. the function of the neuron signal transmission in this model, which belongs to three piecewise constant argument, indicates the following charactersif the signal of one neuron on the network is active between a and b, it will produce invariable encouragement effect on another neuron ; if the signal of one neuron is lower than a, it will produce invariable restrain effect on another one, if the signal of one neuron is higher than b, it will produce no effect on another one
本文研究了一類二元離散人工神經網路模型的解的收斂性及周期解的存在性等動力學特徵。該模型的神經元信號傳遞函數是三段常數不連續函數。這種信號傳遞函數表明如果某神經元的信號在a與b之間活躍，則它對另一個神經元產生恆定的激勵效果，如果某神經元的信號低於a ，則它對另一個神經元產生恆定的抑制效果，如果某神經元的信號高於b ，則它對另一個神經元不產生作用。 -
Two block time - recursive algorithms are developed for the efficient and fast computation of the 1 - d rdgt coefficients and for the fast reconstruction of the original signal from the coefficients in both the critical sampling case and the oversampling case. the two algorithms are implemented respectively by a unified parallel lattice structure. and the computational complexity analysis and comparison show that the proposed algorithms provide a more efficient and faster method for the computation of the discrete gabor transforms
首先論證了一維rdgt系數求解演算法和由變換系數重建原信號演算法，不論是在臨界抽樣條件下還是在過抽樣條件下，都同樣具有塊時間遞歸特性，並提出了相應的塊時間遞歸演算法及其并行格型結構實現方法，計算機模擬驗證了并行格型結構實現的可行性，計算復雜性分析與比較也說明了rdgt塊時間遞歸演算法的并行格型結構在計算時間方面所具有的高速和高效性能。 -
Set up a model for lfm signal detection and parameter estimation on the basis of realization of the digital computation of discrete fractional fourier transform 4
3 .在分數階fourier變換離散數值計算實現的基礎上，建立了lfm信號的檢測與參數估計系統模型，並模擬實現。 -
The number of discrete signal elements that can be transmitted in a given modulation scheme
在給定調制電路中能被傳送的離散信號碼元數。 -
In this research project we designed some special modules such as synchro / resolver signal transmit & receive card 、 discrete signal output comparison card 、 adi and his adapter cards ect
本課題自行設計製作了同步器信號發送/接收卡、離散量輸出比較板、 adi和his適配器卡等專用功能電路板。 -
According to different signal forms, we plan for the execution methods of three test items : servosystem performance, discrete signal input, discrete signal output., and decide the necessary modules which this ate is composed of
按照測試信號流程劃分了三類測試項目?隨動系統性能檢測、離散信號輸入測試、離散量輸出測試?擬定了相應的實現方案，在此基礎上確定了構造這臺ate的所需的硬體單元。 -
Firstly, a system was developed in functions to collect infrasound data, to transform analog voltage signal from detector into discrete signal by a / d card and to process the data by using methods of digital signal process
首先設計一套數據採集系統，次聲波信號通過傳感器被轉換成模擬電壓信號，通過a d板將其轉換為離散的數字序列，輸入計算機。利用數字信號處理的原理和方法對異常次聲信號進行分析處理。 -
In the second chapter, wavelet theory, which is the theoretic basis of embedded zero wavelet coding is introduced briefly, including wavelet transform " s local characteristics, multi - resolution analysis, discrete signal ' s fast decomposition and construction, wavelet and filter group
第二章，對小波零樹編碼演算法的理論基礎? ?小波理論作了簡要的介紹，包括小波變換的時頻局部特性、多解析度分析、離散信號的快速分解與重構以及小波與濾波器組的關系。 -
Eddy - current sensor conversion circuit consist amplification circuit, band - pass filter circuit, demodulation circuit, differentiation phase and data sampling circuit. these circuits are used to convert the test signal of eddy - current sensor to discrete signal tend to process. the microprocessor system that formed of dsp chip is used to data fitting of test system, data displaying and data communicating with personal computer, etc. the interference questions of hardware design and the measure of eliminating interference signal in the subject are introduced in the last of this chapter
硬體電路的設計主要分三大部分來實現：激勵源電路部分，由分頻電路和頻率合成電路組成，產生頻率穩定的激勵信號以確保檢測任務的正常進行；傳感器變換電路部分，由放大電路、濾波電路、檢波電路、鑒相電路和數據採集電路組成，主要將電渦流傳感器檢測線圈檢測到的信號變換成只含有被測信息的離散信號，易於后續電路處理；由dsp晶元構成的微處理系統，主要完成檢測系統的數據擬合、顯示及與主機通信等功能。 -
In applications of array processing such as radar, sonar, and wireless communications, the array observed signal is best modeled as a distributed, rather than a discrete source
在雷達、聲納、無線通信等陣列處理應用環境中，由於存在豐富的多徑散射，陣列觀測信號更適合採用分佈源模型來描述。 -
Amplitude correction approach using average of several points in discrete spectrum for analyzing the dynamic signal of rotating machinery with varying speed
變速機械弱時變信號幅值譜校正的多點平均法 -
Adopting the latest research result on dynamic signal discrete spectrum analysis and the idea of virtual instrument, a dynamic signal analysis virtual instrument software system is developed, which is based on windows and has good performance
並採用動態信號離散頻譜分析領域最新研究成果，基於虛擬儀器設計思想，研製一套方法新、功能全、實時性好、精度高的基於windows的通用動態信號分析虛擬儀器軟體系統。 -
The conventional quadrants sensors mainly have 4 or 8 quadrants, which are not integrated with the signal processing circuits in one chip but are soldered with the discrete signal processing circuits. in this way, it ' s difficult to realize the micromation and system optimization of the devices. in addition, there are few number of photoelectric sensor parts in conventional quadrants sensors, which limits the targets information got from the conventional quadrants sensors
傳統的硅象限傳感器主要採用四象限，八象限的結構，採用焊接的方式將分別製造的感光象限和電路結合在一起，不能實現感光象限與信號處理電路的單晶元集成，難以實現器件的微型化和系統優化；同時，傳統象限傳感器的感光象限單元數量較少，獲取的目標信息有限，難以實現對目標的坐標位置獲取、形狀識別等功能。 -
The continuous signal is transformed to the discrete signal which it could be recognized the computer through input signal circuit and aid transformation circuit. the discrete control signal which it is output by the computer is transformed to the continuous control signal through output signal circuit and d / a transformation
將檢測到的連續角信號經輸入信號電路和a d電路轉換為飛控計算機識別的離散信號；將飛控計算機輸出的離散控制信號經輸出信號電路和d a電路轉換為滑翔彈的連續控制信號。 -
Finally, the author argues that prefiltering a discrete signal is a necessary step before using unbalanced multiwavelets. in this thesis, the author applies orthonormal perfiltered and first - order balanced multiwavelet to the compression of ecg data respectively. by using orthonormal perfiltered we can acquire a better result than by using first - order balanced multiwavelet or by using single wavelet
對多小波而言，在變換之前對離散信號進行預處理是必須的，我們分別採用正交預濾波和一階平衡后的提升多小波對心電信號進行壓縮，正交預濾波的效果好於一階平衡，也好於一般的單小波。
分享友人