頻帶轉換 的英文怎麼說

中文拼音 [bīndàizhuǎnhuàn]
頻帶轉換 英文
band changing
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 轉 : 轉構詞成分。
  • 換 : 動詞1. （給人東西同時從他那裡取得別的東西） exchange; barter; trade 2. （變換; 更換） change 3. （兌換） exchange; cash
  • 轉換 : change; transform; convert; switch
  1. This paper refers to several creation in compatibility with large volume of fed display and conversion of different video signal. it firstly used special central chip al300, designed correlative circuits, successfully developed vga full - color fed console system, compatible with resolution 1280 1024, achieved functions such as multi - video signal conversion and interleaving, met vga ’ s resolution of fed. it firstly designed and fabricated vga interface and separated video interface - - s - video, converting several video signals to 24 bits full - colored digital image signal in fed driving system, achieved separation of luminance signal and chromatism signal, enhanced the bandwidth of luminance signal

    首次採用平板顯示專用控制晶元al300 ，設計並製作了相關配套電路，支持的最高解析度是1280 1024 ，實現解隔行和多種視頻格式轉換的功能，滿足了fed顯示屏對vga解析度的要求。首次在基於fpga的vga級彩色fed控制系統中設計並製作了vga介面和分離電視信號s - video介面，可以將多種視頻信號變換為fed驅動系統可用的24位彩色數字圖像信號，實現亮度信號和色差信號的分離，提高了亮度信號的帶寬。
  2. In this paper, on the basis of absorption of achievements of the research on auditory physiology, an auditory model simulationg the peripheral auditory system and part of the central auditory system is set up. the model is made of the fitlters presenting the characteristics of the basilar membrane for analyzing the voice signals, the half wave rectification modeling the inner hair cells and energy transfer of nerve fiber

    在吸收聽覺生理學研究成果基礎上，建立了一個模擬外圍聽覺系統和部分中樞聖經系統功能的聽覺模型。模型由表徵基底膜的頻率分析的帶通濾波器組、內毛細胞的半波整流特性和神經纖維的能量轉換特性組成，該模型可以作為前端處理來提取語音信號的自相關圖譜。
  3. When the cur - cuit resets, the chip remains accepting state, works in burst mode, and adopts dpsk modulation mode. it proceeds quadrature - sampled intermediate frequency signal after the ad9057 has converted, then down - converses, despreads and demodulates. the demodulated baseband signal will be sended into scm to dispose through interrupt

    上電復位后，晶元處于接收狀態，工作在突發模式下，採用dpsk調制方式，將ad9057轉換完的中頻信號進行復正交取樣後下變頻、解擴、解調，通過中斷將解調完的基帶信號送入單片機處理；處于發送狀態時，可將數據擴頻、調制，經ad9768送出。
  4. And the most advantage of ofdm is that it can convert high - rate data stream into the low - rate and reduce data bandwidth so that multi - path - fading can be transformed into flat fading in wireless circumstance

    這種調制技術的最大的好處就是將高速的數據流，變換成并行的低速數據流，減小了數據帶寬，從而可將無線環境中的多徑衰落（頻率選擇性率落）轉換成平坦衰落。
  5. Arithmetic figure that new dvd that conduct and actions world the adoption arithmetic figure of the first style see the port dvi port to broadcast, three stars the dvd - hd938 to can output to have not yet the compression to see the signal, but have no to need to pass by few molds the conversion process, from but avoided the loss of the painting quality with lose true, deliver the real arithmetic figure signal to television the dvi port is a high take the ieee1394 port breadth port, its deliver the speed to attain 5 gbps, is more than ten times to deliver the speed. at the same time, need not proceeding of port of adoption dvi few mold conversion, can avoid to convert what process result in to lose true, from but real realizes the arithmetic figure deliver

    作為世界第一款採用數字視頻埠dvi埠的新型dvd播放器，三星dvd - hd938能夠輸出未經壓縮的數字視頻信號，而無需經過數模轉換過程，從而避免了畫質的損失和失真，向電視傳輸真正的數字信號dvi埠是一種高帶寬的埠，其傳輸速度達到5gbps ，是ieee1394埠傳輸速度的十幾倍。同時，採用dvi埠不用進行數模轉換，可以避免轉化過程造成的失真，從而真正實現了數字傳輸。
  6. It takes use of pseudo - random technology, dynamic adaptive technology, multi - channel technology, random position embed technology and so no. so the digital watermarking can resist the physical process of printing and scanning. at the same time, the watermark is binary image which includes a great deal of information, such as personal id, secret information, even a piece of map

    本文特別針對印刷和掃描給數字圖像帶來的誤差的問題，設計了一種新的水印演算法，綜合運用了偽隨機處理技術、動態自適應技術、不同應用選擇不用頻帶處理技術、隨機位置嵌入技術、多通道嵌入等技術，使得本文所設計的水印演算法能夠抵抗印刷和掃描的物理轉換過程，同時本文所設計的水印是二值圖像，能夠承載大量的信息，例如個人id 、機密信息、商標標識，甚至可以是一幅地圖。
  7. The paper first reviews the research background and actuality of the filter " s design in china and other country, introduces the meaning of the project and the work of the paper, narrates the theory of the switched - capacitor network and the basic switch building blocks, analyses the related factors of the design of sc filter. such as the selection of the architecture, the trade off of the opamp " s gain, bandwidth, phase margin, slew rate and setting time, the effect of the switch " s on resistor, how to reduce the charge injection and the clock feed - through, the power consumption and the selection of the sampling frequency and so on

    本文首先回顧了濾波器設計的國內外研究背景和現狀，介紹了本課題提出的意義以及本文的主要工作，論述了開關電容網路原理和基本開關模塊，分析了開關電容濾波器設計的相關因素：電路結構的選擇，對運算放大器設計中高增益、寬帶寬、相位裕度、轉換斜率和建立時間等的折中考慮，開關的打開電阻對電路的影響，開關電容電路中怎樣減少電荷注入和時鐘饋通，以及整個電路的功耗問題和采樣頻率的選擇等。
  8. Based on the dds technology, the waveform generator first stored data in high speed ram, then used dac to synthesize waveform by the data. many waveforms could then be generated easily. besides, the wave generator could get high performance on frequence resolution and stability, phase continuum, relative bandwidth etc. the dds technology was widely used in frequence synthesis field

    基於dds技術的波形發生器以高速存儲器作為波形數據查找表、通過高速d / a轉換器對存儲器的波形進行合成，可以靈活產生多種波形，同時具有頻率解析度高、頻率穩定性好、頻率轉換快、相位連續性好以及相對帶寬較寬等特點。
  9. The design of hardware module includes a / d converter, ddc ( digital down converter ), duc ( digital up converter ) and dsp. the design and application of ad6640 and ad6624 are fully discussed in this part. the design of software module includes the parameter design for ddc filter and the base - band signal processing of dsp

    收發信機硬體設計主要包括： a d 、 d a轉換器、數字下變頻器（ ddc ） 、數字上變頻器（ duc ）以及dsp ，論文詳盡介紹了a d器件ad6640 、 ddc器件ad6624和dsp器件tms320c5410的設計和應用；收信機軟體設計主要包括： ddc濾波器參數設計和dsp的基帶信號處理，給出了dqpsk調制、解調演算法的dsp實現。
  10. Frequency estimation technology and bandpass filtering, which are named as wideband digital downconversion technology, are the key technologies to realize data rate conversion system

    測頻技術以及帶通濾波，即寬帶數字下變頻技術，是實現數據率轉換系統的關鍵技術。
  11. The structure and circuits of high resolution adc ’ s modulator which applied in audio signal range with 20khz base band and 16 bits resolution have been researched

    本文對一種適用於音頻信號范圍的高精度模/數轉換器的調制器部分進行了結構和電路研究，基帶頻率20khz ，精度16位。
  12. Direct modulator converts baseband signal to rf signal without upconvertion. the system design is relatively simple compared to upconversion. so direct modulator provides adventages of compact size, low cost and low spurious response

    直接調制將基帶信號直接轉換為射頻信號，不需要二次頻率變換，與上變頻方式相比系統結構簡單，降低了對濾波器的要求，具有體積小，重量輕，成本低等明顯的優點。
  13. The bottleneck of hybrid filter banks adc system is that it cannot sample directly higher radio frequency signal because of lower analog input bandwidth of its adc. in order to remove it, a kind of downsampler model based on nyquist and bandpass sampling theorem is presented, analyzed and proved in time and frequency domain, in addition a downsampler is designed according to the model. on the basis of hybrid filter banks adc system, a class of high speed hybrid filter banks adc system is proposed

    針對混合濾波器組adc系統因其adc模擬輸入帶寬低而不能對頻率較高的射頻模擬信號進行模/數轉換的瓶頸，作者提出了一種基於nyquist采樣定理和帶通采樣定理的抽取器數學模型，對該數學模型進行了時域、頻域的分析證明后，設計了一種基於該數學模型的sha抽取器，進而在混合濾波器組adc系統的基礎上，提出了高速混合濾波器組adc系統。
  14. Field use and test shows that, ( 1 ) the coupler drive system improves the soft characteristics in the starting and transmission of the pumping unit ; ( 2 ) the new drive system solves the problems of drive slippage and frequent change of rubber belt ; ( 3 ) it provides large transmission rate and enables adjusting the stroke number optionally ; ( 4 ) the system efficiency of the pumping unit can be improved and power consumption can be lowered by using the coupler drive system

    現場應用測試表明： （ 1 ）耦合器傳動系統可改善抽油機啟動和傳動中的軟特性，提高整機和抽油桿的使用壽命； （ 2 ）解決了抽油機膠帶傳動中打滑「丟轉」和頻繁更換膠帶等問題； （ 3 ）實現了抽油機大傳動比，沖次任意可調，從而滿足供液不足油井和稠油注蒸汽生產井的不同需要； （ 4 ）可提高抽油機系統效率2 . 24 % ，日耗電量下降39 . 6 % 。
  15. Krf excimer is the best medium in uv ultra short pulse amplification for its small saturation energy and high contrast ratio accessible

    它具有波長短（ 248nm ） ，頻帶寬（ 3thz ） ，工作介質的非線性效應小，能量轉換效率高等優點。
  16. Network - to - customer installation interfaces - analog voicegrade switched access lines with network - implemented coin - operated payphone feature

    網路和用戶裝置間的介面.帶網路實現投幣付費電話功能的模擬音頻轉換訪問線路
  17. Telecommunications - interface between carriers and customer installations - analog voicegrade switched access lines with distinctive alerting features

    電信.載體和用戶裝置間的介面.帶區別警示功能的模擬音頻轉換訪問線路
  18. This transformation is useful for creating a custom word list based on the input text, complete with word frequency statistics

    此轉換對于創建基於輸入文本並帶有詞頻統計信息的自定義詞列表很有用。
  19. At last we introduce the realization of all the parts, the problem in the circuit design and the measured data. the results show that the designed system has met the requirement. in this dissertation, direct digital synthesis technology has been used in the phase - locked frequency synthesizer, which can make full use of the characteristics of direct digital synthesis technology such as flexible output wave shape and continuous

    本課題將直接數字式合成技術用於鎖相頻率合成器中，該方法將直接數字合成的特點，如輸出波形靈活且相位連續、頻率穩定度高、輸出頻率解析度高、頻率轉換速度快、輸出相位噪聲低、集成度高、功耗低、體積小等與鎖相環路的頻帶寬、工作頻率高、頻譜質量好等優點有機的結合起來，從而在寬帶的條件下實現了比較好的雜散性能和相噪。
  20. The theory and design of the balanced converter, fin - line waveguide bandpass filter, waveguide to microstrip transition and millimeter - wave amplifier are studied in this paper. finally the paper presents the structure and the simulated result of each module

    本文對組件中的平衡上變頻器，鰭線波導帶通濾波器，波導微帶轉換結構以及毫米波信號放大器的原理和設計進行了討論，並給出了電路結構，模擬結果。
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