d transform d 中文意思是什麼

d transform d 解釋

  • d :
  • transform : vt （使）變形；（使）變化[轉化，轉變]；變態，改變（性質、機能等），改造，改革；【數學】變換；【電...
  1. Secondly, in the feature extraction stage, haar 2 - d wavelet transform is used in each band of the normalized image. the mean values and variances of the coefficients of 7 main wavelet channels are extracted as features

    該演算法通過對歸一化處理后虹膜圖像的各個小分割區域進行二維小波變換，提取出主要小波通道的小波系數均值和方差作為特徵值。
  2. During the period of measurement, the transduction circuits transform the differential pressures, the absolute pressures and the temperatures received by the sensors into the voltage signals, and then, the voltage signals are transformed into digital signals by the a / d convertor. the mcu processes these digital signals and calculates the cumulation of the flow. finally the totalizers contact with the pc by rs - 485 bus to form a distributed measuring network

    在測量過程中，系統以流量計節流所獲得的差壓信號作為主信號、絕壓和溫度信號作為補償信號進行流量積算，這三種信號分別由相應傳感器感知后，經各自的物理信號測量電路轉換為電信號，再由a / d轉換模塊轉變為數字量，交微控制器進行處理、積算。
  3. At present, the typic harmful current detection methods are the fast fourier transform algorithm in frequency domain and methods based on the instantaneous reactive power theory, these methods all require some transform and quick, real - time calculating, so high precision analog multipliers or high speed dsp chip with fast a / d are needed, this results in complex circuit and high cost ， which have restricted the development of apf

    目前畸變電流檢測常用的方法有頻域法的fft和基於瞬時無功理論的畸變電流檢測法。這些方法均有一定的變換，需要快速、實時運算，因此必須使用高速的數字微處理器和高性能a / d轉換器，這必將大大提高系統成本，使得電路結構復雜，在一定程度上限制了有源濾波器的發展。
  4. The solving process of the d ' alembert ' s differential equation using fourier ' s triple integral transform method

    用重傅氏積分變換法求解達朗貝爾方程
  5. Secondly, the wavelet transform of ae signals collected in experiment is carried out with db6 wavelet and scale 3 on the basis of the signal ' s frequency analysis. the high frequency d, signal is ae characteristic signal. and by choosing the level ' s wavelet coefficient as its input, the wavelet - neural networks can be trained with the data of ae experiment, and the ae signals can be effectively recognized

    然後，在實驗與對實驗所採集數據頻譜分析基礎上，根據對小波分析用於信號處理可行性研究，本文選擇db6母小波、尺度j = 3對實驗所採集數據信號進行小波變換，變換后其高頻成分d _ 1信號即為聲發射特徵信號。
  6. Secondly, the 3 - d video coding algorithm based wavelet transform using lifting scheme is proposed, which not only increases computer speed but also gives superb video playback quality without any boundary. finally, the wavelet transform using lifting scheme is used in the object - based video coding, which support scalability and user interactions

    三是在提升小波和任意形狀的圖像編碼的基礎上提出了任意形狀的三維視頻編碼方法，它不僅支持可伸縮性編碼方法，並且支持可交互性，更適于互動式視頻服務和遠程監控。
  7. 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。
  8. In audio robust watermark algorithm, watermark is embedded in transform domain by using the speediness, simplicity and multi - resolution of wavelet transform. when extracting watermarking, the audio is decomposed by single - level discrete 1 - d wavelet transform, and watermarking is extracted by ica based on kurtosis maximization. this method ’ s computational cost is low

    音頻水印利用小波變換快速、簡單和多解析度的特點來嵌入水印，提取的時候，先對觀測音頻文件進行一級小波分解，然後用基於最大峰值的ica方法進行水印提取，這種方法避免了其他盲源分離方法必需的求逆運算，所以計算量小。
  9. The instrument include cpu, sensitive element, canmengou monitoring circuit, little signal amplify circuit, a / d transform circuit, communication circuit, display circuit, monitoring circuit, cpu is the core in the instrument, complete data gather, process, export, display and so on

    儀器能夠根據甲烷濃度報警限（ 1 . 00 ）進行聲、光報警，並啟動排風設備，同時具有通信功能。儀器由cpu 、敏感元件、看門狗監控電路、小信號放大電路、 a d轉換電路、通信電路、顯示電路、報警電路等組成。
  10. In hardware design, a / d, mt8880, serial port communication module and other interface circuit are described. in software design, the related algorithms such as scale transform, digital filter, digital zero, dtmf communication and repeated output program are considered

    硬體設計主要介紹了a d轉換、 mt8880 、串列通信等模塊和介面的電路設計，軟體設計主要介紹了程序設計中比較關鍵的標度變換、數字濾波、數字調零和重復輸出等數據處理的演算法以及利用dtmf信號實現數據採集器和監測站傳輸數據的通信軟體設計。
  11. This product is a full electron construction in which its front - end adopts pressure sensor with baffle filled oil chip. output signal is sent the data to microprocessor from high - precision, low temperature drift and high - reliability amplification circuit and a d convert circuit, after operating, to transform by high - precision d a convert circuit into standard signal output

    該產品為全電子結構，前端採用帶隔離膜充油芯體的壓力傳感器，輸出信號由高精度低溫漂和高可靠性的放大電路和模數轉換電路將數據送入微處理器，經運算後由高精度數模轉換電路變換為標準信號輸出。
  12. We have made a full theoretical analysis of the wave property and the wave parameters of the flap - type wave generator in the towing tank of our school, and confirmed that should make the factor that the performance of the wave generator give play to normally to influence. in allusion to that the old wave generator can not simulate sea wave, upgrade and transform to this system change the control computer system and install additional d / a change card, redesign the wave control interface and transmission means of control signal, give up the disk machine that can not be used, make the wave - making control voltage signal that has translated direct input the wave controller, make wave controller to make waves through servo system

    對我校船模水池原有的搖板式造波系統的性能進行了理論分析，針對水池原有造波機系統模擬海浪的不足，對該系統進行升級與改造，更換了主控計算機並加裝d a轉換卡，重新設計了造波控制信號的介面與傳輸方式，捨去了原系統中現已淘汰的磁盤機，使轉換后的造波控制電壓信號直接輸入到造波控制器中，再由造波控制器通過液壓伺服系統驅動造波板進行造波。
  13. The digitizer based on pxi bus uses fpga ( field programmable gate array ) to implement 256 points, radix - 2 dit fft ( fast fourier transform algorithm ). the design uses pipelining for fft processing and can accomplish sampling and processing signals of two channels at the same time. in the signal acquisition circuit, - a / d convector is used to enhance the precision of the signal sampling

    在本設計中，採用fpga （ fieldprogrammablegatearray ）實現了256點基2dit演算法復數fft （ fastfouriertransformalgorithm快速傅氏變換演算法）處理器，具有較高的速度和運算精度fft ，設計採用流水線處理方式大大的提高了處理速度，可實現對兩個通道輸入信號的并行採集與處理。
  14. Much of the credit belongs to advances in graphics processing units ( gpus ), the microchips at the heart of computer video cards that transform 3 - d scenes into 2 - d frames at speeds faster than a trigger twitch

    這大都得歸功于繪圖處理器（ gpu ）的進步，也就是位於電腦顯示卡核心的微晶片，它能夠快速把立體場景轉換成平面影格，速度甚至比扣扳機還快。
  15. Thus many measures should be proposed, including concretely : analysis, design of situation, post and mutual relationship ; analysis and design of management range ; division and design of elemental organization department ; design of organization decision system, including organization leadership system, power structure, decision mechanism an d management system ; design of organization management executive system, including management command organ, operation organ ( import, transform, export ) feedback organ, control organ ; analysis and design of the relationship between banking and the others, social environment ; design of organizational behavior ( moral ) norms and so on

    具體包括：職位、崗位及其相互關系的分析、說明與設計;管理幅度與管理層次的分析與設計;基本組織單位、部門的劃分與結構設計;組織決策系統的設計，包括組織領導體制、權力結構、決策機制與管理體制的設計;組織管理執行系統的設計，包括管理指揮機構、運行操作機構（輸入、轉換、輸出） 、反饋機構、控制機構;銀行組織與其他組織、社會環境等諸多方而的聯系、關系的分析與設計;組織行為（倫理）規范的設計等方面。
  16. The projective transform occurs in the 2 - d imaging process, therefore in order to recognize airplane object, we have to find projective - invariant shape descriptor of object

    由於目標的成像過程屬于射影變換，因此為了正確識別目標，必須找到一種具有射影不變性的目標形狀的描述方法。
  17. 3. build the system of collecting the stress of er fluids, which consists of amplifier a / d transform card and the executed program

    製作了由信號放大電路、數模轉化卡、採集程序組成的電流變液應力實時採集系統。
  18. In this paper, we briefly introduced the performance of wave coding and vocoder, emphasizedly studied the principle and performance of variable rate vocoder q4401, including the internal construction and pins, qcelp coder & vocoder, pcm interface, cpu interface initialization process, command format and so on. we also designed a application circuit, with the experiment validated its performance. in this design, the pcm interface chip is tp3057, it was used to finish a / d transform, the compress coding was finished by q4401, the initialization and control were accomplished by 8051 singlechip

    重點是研究變速率語音編解碼晶元q4401的工作原理及性能。其中包括q4401的內部結構及管腳、 qcelp編碼方式、 pcm介面、 cpu介面、初始化過程、命令格式等，並在此基礎上，設計一個實際的應用電路，通過實驗，驗證其性能。在設計中用pcm介面晶元tp3057來完成從模擬信號到數字信號的轉換，再由q4401進行壓縮編碼，對q4401的初始化及控制由8051單片機來完成。
  19. Then, by pass amplifier, filter and a / d transform, the analog signal is transform into digital signal. with the control of scn, the digital signal is send into computer

    信號處理系統包括ccd光電轉換、差分放大、 a / d轉換等，並在單片機的控制下，將數字信號輸入到計算機中。
  20. So in this paper, the principle of electroptical non - invasive dual - ray methods are fist present in detail. in the theorem of simple structure and low power consumption, we select detecter with fitble wavelenth and low power msp430 processor, and design high stable ray - emitt circuit, low noise pre - amplifier, background disturbance counteract circuit, the signal are low - filtered and sent to msp430 " a / d transform directly to digital signal processing

    為此，本文詳細分析了光電無創雙光束法測定脈搏血氧飽和度的基本原理，在結構簡單，功耗小的原則下，選用合適發光波長的探頭和信號處理器，設計出光強穩定的發光電路，低噪聲前級，以及本底干擾對消電路，通過兩級低通直接送至ti公司的超低功耗混合信號處理器msp430進行a / d變換得到原始的數字信號。
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