頻率失真 的英文怎麼說
中文拼音 [bīnlǜshīzhēn]
頻率失真
英文
amplitude-frequency distortion-
Based on fractional sampling method, a new super - exponential iteration decision feedback blind equalization algorithm for severely nonlinear phase distortion channels was proposed
因此針對嚴重頻率衰落和非線性相位失真通道，提出了一種分數采樣的混合盲均衡演算法，並獲得了較快的收斂速度和較小的剩餘均方誤差。Second, an adaptive rate - distortion model is proposed by extending directed acyclic graph model for fine granular scalable video coding. we add rate, original distortion and adaptive scale to the directed acyclic graph model
其次，針對精細粒度可擴展視頻編碼技術，本文擴展有向無環圖模型，在該模型中加入碼率，原始失真和自適應因子等屬性，建立了自適應率失真模型。Rate - distortion analysis and rate control play a key role in video coding and communication systems by providing the rate - distortion optimized compression performance, assuring the successful network transmission of the coded video data, and achieving the best visual quality at the receiver
為了取得最優化的壓縮效率，確保編碼數據在通道成功傳輸，並在接收端獲得最佳的視頻質量，率失真優化和碼率控制技術具有重要的地位。Delay frequency distortion
延遲頻率失真Based on the geophone vibration formula, this paper presents the affective factors to the seismic data from high resolution geophone arrays and its main property specifications, such as natural frequency, damping coefficient, sensitivity, harmonic distortion, and alias
為此，從檢波器的振動方程出發，對高解析度地震檢波器性能指標（如自頻率、阻尼系數、靈敏度、諧波失真、假頻等）以及檢波器組合的連接方式對地震資料品質的影響進行了分析。The predistortion, which aims at compensating for the nonlinear distortion caused by the power amplifier, has a good performance in eliminating the nonlinear distortion of am / am & am / pm, improving the aci and spectrum efficiency
預失真技術是針對射頻功率放大器非線性而提出的一種補償技術，可以有效消除由非線性造成的傳輸信號的幅度和相位失真，降低信號鄰道干擾（ aci ） ，提高頻譜利用效率。In packet based wireless video communications, when best band distribution, not only source distortion should be considered, but also channel distortion caused by channel errors. the existing macroblock - layer rate control schemes calculates quantization parameters of all macroblocks ( mb ) in a frame in a raster scan order, and then encodes the mbs in the same order. actually, the quantization distortion is heavily dependent upon the coding order of mbs
在基於包的無線視頻傳輸中，最佳帶寬分配時，不僅要考慮信源編碼失真，也要考慮由於通道差錯引起的通道失真；已有的宏塊層碼率控制演算法以矩陣掃描的順序計算一幀中所有宏塊的量化參數，事實上量化失真與宏塊的編碼順序有很大關系，改變宏塊的編碼順序，使復雜的宏塊分配到更多的比特數，顯然能大大提高編碼效率。Signal distortion includes three kinds of distortion : frequency, phase and waveform
信號的失真分為頻率失真、相位失真和波形失真等三種。These failures were most likely the result of excessive background noise and distortions in the frequency of the songs
這幾次失敗最可能是因為背景的噪音太吵，以及歌曲的頻率失真。3. a rf pa linearziation system that combines rf predistorting technique and feedforward technique is present. contrasted with basic feedforward system, the main improvement of new system is the signal feature of error signal path
由於在主功放和誤差功放前分別加上了射頻預失真單元，因此提高了整個系統的線性度和功率效率。The lagrange multiplier method using rate and distortion information is then applied to optimal allocates bitrate for each frame in fine granular scalability substreams
基於拉格朗日乘子法的最優化碼率分配演算法可以利用該模型中的率失真信息分配碼率，在碼率一定的條件下提供最好的視頻效果。Multi - carrier power amplifier linearization based on adaptive rf predistortion
基於自適應射頻預失真的多載波功率放大器線性化技術At the same time, this thesis analyz es the optimal resourse allocation problem in video coding and reviews recent advances in rate - distortorn optimized video coding
同時本文還分析了視頻編碼中的最佳資源分配問題，詳細討論了率失真優化理論在信源編碼和通道編碼中應用的最新進展。In the simulation, the redundancy - rate - distortion performance is analyzed, and results prove that this mdc has a better reconstruction performance than conventional single description coder ( sdc ) in error - prone environments
在模擬中，對該框架的冗餘率失真性能進行了分析，結果表明：該多描述視頻編碼方法在易錯環境中的性能優于傳統的單描述編碼方法。Considering the nonlinear difference of the gain and phase characteristic in solid state power amplifier ( sspa ), a parallel but imbalanced predistorting adjuster is used and the hardware cost can be reduced
考慮到固態功率放大器（ sspa ）幅度和相位非線性特性的差異，該系統採用幅度和相位不平衡調節的射頻預失真結構，降低了硬體成本。We take h. 264 scalable extension as example to analysed the bitstream structure and error propogation path and create the adaptive rate - distortion model. complying with the presented scalable video stream model, the file format for scalable video is proposed based on iso base media file format, which is simple and flexible enough to address the demands of scalable video application
最後，本文以基於h . 264的可擴展編碼技術為例，分析其碼流結構和誤差傳遞路徑，建立基於h . 264的可擴展編碼自適應率失真模型，設計了兼容國際標準的可擴展視頻編碼文件格式。To support smooth quality reconstruction under multiple rate constraints of transmission, it ’ s important to obtain the actual rate - distortion ( r - d ) function or distortion - rate function of each enhancement layer ( el ) frame
為了能夠在不同的傳輸碼率下平滑重建fgs目標視頻流，基於幀的fgs增強層率失真函數的獲取是一個非常關鍵的問題。The super - low frequency and distortion power amplifier is developed with opa512 operation amplifier produced by bb co. in america. and the analyses software of frequency spectrum based on fft is designed
研製了超低頻、低失真功率放大器；開發了基於fft超低頻頻譜分析軟體，並對它們進行測試與分析。In the simulation, its redundancy - rate - distortion performance is analyzed firstly, then the performance of error concealment and error resilience, the coding framework proposed in this paper are tested and compared with the mdc based on pct and sdc in error - prone environments, the results testify that not only the proposed mdc scheme has a better robustness but also a higher coding efficiency, which ensures reliable transmission of compressed digital video over networks
在模擬實驗中，首先對其冗餘率失真進行了分析，然後和基於pct的mdc及傳統單描述編碼方法在有突發錯誤及丟包壞境中，對錯誤隱藏和錯誤復原等抗誤碼性能進行了比較，結果表明：本文的多描述編碼在易錯環境中不僅具有更優良的抗誤碼性能，而且編碼效率較高，能夠保證在網路上視頻傳輸的可靠性。The visual quality of decoded video information is improved at some extent and psnr value of luminance parts is increased nearly 1 db in error - prone channel. 4. an adaptively rd - optimal coding algorithm was proposed to be aimed at the computing redundancy in h. 264 recommendation algorithm
針對h . 264標準率失真優化編碼演算法中存在的計算冗餘過大問題，提出了一種自適應率失真優化編碼演算法，將h . 264標準演算法中求解解碼重構視頻信息期望失真度的代數和平均演算法，改進為加權和平均演算法。分享友人