電聲調制器 的英文怎麼說

中文拼音 [diànshēngdiàozhìqì]
電聲調制器 英文
electroacoustic modulator
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 調 : Ⅰ動詞1 （配合得均勻合適） harmonize; suit well; fit in perfectly 2 （使配合得均勻合適） mix; adju...
  • 制 : Ⅰ動詞1 （製造） make; manufacture 2 （擬訂; 規定） draw up; establish 3 （用強力約束; 限定; 管束...
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  1. For micro - cavity semiconductor laser, station model is proposed in this paper and its steady - state and instantaneous characteristics when the coupling efficiency of spontaneous emission into a lasing mode is equal to 1 are analysised. for current noise, sp noise, noise, p noise, as well as current modulation, sp modulation, modulation and p modulation, using small - signal approximation, we derive the laser ' s corresponding transfer functions. and we calculate their signal - to - noise ratio ( snr ) gain in various parameters through frequency domain analysis in the premiss of large input snr

    本文對于微腔半導體激光器，提出站模型，能夠較直觀簡潔地分析微腔半導體激光器的穩態和瞬態特性，利用此模型對具有重要實用價值的= 1的微腔半導體激光器進行了討論；對于電流i噪聲、自發發射壽命_ （ sp ）噪聲、自發發射因子噪聲、光子壽命_ p噪聲，以及電流調制、 _ （ sp ）調制、調制、 _ p調制，在小信號近似下，得到了相應的激光器的傳遞函數；在大信噪比的前提下，對激光器進行了頻域分析，分別計算了它們在不同參數下的信噪比增益，分析了其抗噪聲性能。
  2. For phonetic signal modulation, if the pass band range of the band pass filter ( bpf ) is 300hz - 3400hz, the anti - noise properties of laser are approximately independent of bias current and parameters of the cavity ; when the pass band range of bpf increases to a certain degree, modulating bias current and parameters of the cavity can improve the anti - noise properties of laser

    對語音調制情況，如帶通濾波器的通帶范圍取為300hz - 3400hz ，則激光器的抗噪聲性能基本不依賴于偏置電流和腔內參數；當帶通濾波器的通帶范圍增大到一定程度，調整偏置電流和腔內參數可以實現半導體激光器的高抗噪聲性能。
  3. Lithium niobate ( linbo3 ) has been studied and documented extensively for over three decades because of its good electro - optic coefficient and acousto - optic coefficient, its ease of processing, and its environmental stability. it is readily available commercially and is the material of choice for external modulators in long - distance high - bit - rate systems up to l0ghz

    Linbo _ 3已經被廣泛的研究了三十年，由於它具有高的電光系數和聲光系數，工藝簡單，材料環境穩定等優點， linbo _ 3材料集成光子器件已經應用到實際光網路中，已經成為遠距離高速網路系統（ 10ghz以上）的外調制器優先選用的材料。
  4. Equipment and components used in cabled distribution systems primarily intended for television and sound signals general specification for frequency modulated stereo and monotonic modulators

    電視和聲音信號的電纜分配系統設備與部件調頻立體聲和單聲道調制器通用規范
  5. Because of the using of interpolation, noise shaping and switching amplification in the digital audio amplifier technology, the power supply modulator is not only much efficient but also behaving good in envelope amplification, this advantage is hard to implemented with conventional technology

    數字音頻功放技術是近年發展起來的高效率音頻放大技術，該放大技術採用了過取樣、噪聲整形等數字音頻處理演算法和開關功率放大。採用該技術實現的電源調制器不但具備很高的效率，而且能高指標地放大包絡信號，是常規的電源調制技術無法實現的。
  6. Applications of plc programmable controller and supersonic positioner for the pressure - adjusting well gates control of hydroelectric power plant

    可編程式控制制器及超聲波物位計在水電廠調壓井閘門控制中應用
  7. Grading standard of quelity for modulutor used in cabled distribution systems primarily intended for sound and television signals operating between 30mhz and 1ghz

    30mhz 1ghz聲音和電視信號的電纜分配系統電視調制器質量分等標準
  8. Equipments and components used in cabled distribution systems primarily intended for television and sound signals. part 3 : generic specifications for tv modulator

    電視和聲音信號的電纜分配系統設備與部件第3部分:電視調制器通用規范
  9. （ 2 ） the major circuit has been established, composed of rectifier 、 buck - chopper 、 push - pull inverter and matching network, which realizes high - power supersonic ac output. to achieve maximal output power, the pulse frequency modulation ( pfm ) has been applied to auto - adjustment of output frequency, which corresponds to the load ' s resonant frequency

    （ 2 ）建立了超聲電源主電路，其中包括：整流、直流斬波、推挽逆變器和匹配網路等部分，實現了大功率超聲頻交流電的輸出，輸出頻率的脈頻調制（ pfm ）和輸出功率的脈寬調制（ pwm ） 。
  10. The simulated results show that we can improve the sensitivity by setting the optical bias at / 2, reducing the gap of electrode, increasing the overlap integral factor, reducing the insert lose, adopting suitable segmentation number, increasing the electrode length, increasing the optical power, reducing the wavelength and the relative intensity noise and reducing the receive bandwidth ; obtain the wider bandwidth utilizing reducing the electrode length and the capacitance of modulator, segmentation the electrode ; increase the dynamic range using lowering noise, increasing the optical power at the detector and lower optical bias

    通過計算得知，使傳感器相位偏置為/ 2 ，減小電極間距，提高電光重疊因子，減小器件插入損耗，採用合適的分段數，增加電極長度，增大光功率，降低激光的波長，減小相對強度噪聲，減小接收帶寬，對提高靈敏度的效果是非常明顯的。而減小天線長度，降低調制器電容，電極分段，都可以獲取較大的帶寬。降低系統噪聲;增加到達探測器的光功率，採用較低的光學偏置，都可以增大線性動態范圍。
  11. The ferroelectric materials for their excellent dielectric, piezoelectric, ferroelectric, pyroelectric, electro - opticial, phonon - optic and nonlinear polarization properties have been widely applied in many fields especially in microwave tunable devices, such as phase shifter in phased array antenna, resonantor and filter etc. as far as microwave tunable dielectric materials, barium strontium titanate ( bst ) and its doped series have been investigated intensively, which have about 50 % tunability

    鐵電材料具有優良的介電、壓電、鐵電、熱釋電、電光、聲光及非線性極化等特性，在多種領域有著廣泛的用途。利用其非線性極化特性能制備微波可調元器件，如相控陣天線上的移相器，諧振器，濾波器等。
  12. Design and experiment of acousto - optic waveguide phase modulator in electro - optic integrated acceleration seismic geophone

    光電集成加速度地震檢波器中聲光波導相位調制器的設計與實驗
  13. Especially, linbo _ 3 optical modulators, using m - z waveguides and traveling - wave electrodes, are essential for high - speed and long - haul optical fiber transmission systems since the wavelength chirp is very small and the effect of the fiber dispersion is minimized

    採用行波電極的m - z型外調制器調制速率高，波長的啁啾噪聲理論上為零，幾乎不受光纖色散的限制，已成為高速長距離光纖傳輸系統必不可少的器件。
  14. Especially, linbo3 optical modulators, using m - z waveguides and traveling - wave electrodes, are essential for high - speed and long - haul optical fiber transmission systems since the wavelength chirp is very small and the effect of the fiber dispersion is minimized

    採用行波電極的m - z型外調制器調制速率高，波長的啁啾噪聲理論上為零，幾乎不受光纖色散的限制，已成為高速長距離光纖傳輸系統必不可少的器件。
  15. The sounds and images are converted into electrical signals by a microphone ( sounds ) or video camera ( images ), amplified, and used to modulate a carrier wave that has been generated by an oscillator circuit in a transmitter

    聲音合圖像由話筒（聲音）或攝像機（圖像）轉換為電子信號，經過放大后，用來調制發射器中一個振蕩器產生的負載電波。
  16. The circuits require that the operational voltages of memories must be stable ( voltage does not vary with temperture and it can reject noise which come from all kinds of envioments ) and have large driving capabilities. so, in this papper we have designed a voltage regulator by which can provide a stable voltage for all memories

    在存儲器工作中，要求工作電壓具有較好的穩定性（指一定溫度范圍內的溫度穩定性和對外部噪聲的較好的抑制能力）和較大的驅動能力，因此本文設計了一種能夠為存儲器晶元提供穩定工作電壓的電壓調節器。
  17. Account for the motor control pragram to satisfy guideline of automatic biochemical analyzer. the aforesaid research and develop achievement ' s validity and practical value has been proved by laboratory simulation. the result testified that the system has satisfy great instrument ' s function, raise it ’ s measure definition, reliability, at the same time it depress the cost, restrain the libration and noise

    上述研發成果通過實驗室模擬調試證實了其有效性和實用價值，調試結果表明，這種新型的全自動生化分析儀電機控制系統，能較好地滿足儀器功能要求，在提高其精度、可靠性的同時，又降低了成本，抑制了振動和噪聲。
  18. The radio frequency receiver supports interface for instrument and base station and air interface for mobile station, and it takes the task of magnifying low noise and down - convert and digital baseband processor filtering and magnifying intermediate frequency to reverse link signal. the digital baseband processor samples the received signal after down - convert radio frequency signal to intermediate frequency signal and processes other processing and supports interfaces to computer, next sends data to computer. the gps receiver supports interface for instrument and gps system, and receives gps system signal, next it demodulates the correlative information and sends out benchmark clock signal we need

    射頻接收部分主要為儀器和基站、移動臺提供空中介面，其主要任務是在反向鏈路上對接收到的射頻調制信號進行低噪聲放大、射頻下變頻變換、中頻濾波放大等;數字基帶部分為對接收信號變頻為中頻后進行a / d采樣，以及其他的rsp處理並和計算機提供介面，將數據送至計算機進行后臺處理、顯示等; gps接收機部分為儀器和gps系統提供介面，接收gps系統信號並解調相關信息，輸出所需的電文及時鐘基準信息等。
  19. In order to make full behavior simulation of sigma - delta modulator, the noise models have been set, taking into account most of the sigma - delta modulator ’ s non - idealities and the final result supports the noise models. last, the main circuits of modulator have been designed, such as operational amplifier, comparator and clock generator, the design principle of noise - killed logic circuit has been presented. these circuits have been simulated

    調制器的噪聲模型，考慮了影響調制器性能的一些主要非理想因素，通過模擬驗證了噪聲模型的正確性;最後，設計實現了結構中的主要電路，如運放、比較器、時鐘產生電路，闡述了噪聲抵消邏輯電路的工作原理，利用hspice和cadencespectre對各電路進行了模擬，驗證其功能。
  20. The results of numerical simulation show that for various kinds of noise without modulation the anti - noise properties and the output quality of laser can be improved by selecting appropriately bias current and parameters of the cavity

    數值模擬的結果表明，對于無調制時的各種噪聲，適當選取偏置電流和腔內參數可以提高微腔半導體激光器的抗噪聲性能或激光輸出的質量。
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