delta-sigma 中文意思是什麼

delta-sigma 解釋
增量總和
  • delta : n. 1. 希臘語字母表第四字母〈Δ,δ〉。2. (河流的)三角洲;三角形物。3. 〈D-〉 通訊中用以代替 d 的詞。
  • sigma : n. 希臘字母表的第十八字母 【動、植】 S [Σ] 形;【心理學】千分之一秒。
  1. Oversampled sigma - delta adc based on sigma - delta ( ? )

    基於?調制技術的過采樣
  2. The input stream is decoded and passed through a digital volume control to an 18 - bit over - sampling, multi - bit, sigma - delta dac

    採用fameg獨創性的nand flash保護技術,可使fs7824擁有特定的存儲區域read only區。
  3. For digital audio encoding and decoding modules, delta - sigma modulation is introduced and audio data, preambles with accessorial data are multiplexed according to the digital audio interface standard ; for carrier wave, pll frequency synthesizer is used ; for frequency modulation, voltage control oscillator is taken ; for demodulation, pll frequency discrimination is adopted

    調制方式,並按照數字音頻介面標準對音頻數據、同步字和附加信息進行通道復用;對于載波信號,採取鎖相環頻率合成技術手段;對于頻率調制,採用壓控振蕩器;對于解調電路,採取鎖相環鑒頻電路。
  4. Not only can gain mismatch of the sigma - delta modulator be minimized, but the overload of the later stage sigma - delta modulator can also b e resolved without sacrificing the signal noise ratios ( snr ) of the over all system

    不僅可以減輕積分三角調變器增益不匹配之困擾,並且可以解決后級積分三角調變器容易過負載之問題;然而,卻不會讓整體系統的訊號雜訊比( snr )降低。
  5. In the future it may be possible to have such bandpass sigma - delta adcs with userprogrammable digital filter coefficients, so that the passband of a receiver could be modified during operation in response to the characteristics of the signal ( and the interference

    未來可能會出現用戶可編程數字濾波系數的帶通- adc ,這樣接收機的通頻帶就可以隨著所接收的信號的特性而改變。
  6. Sigma - delta modulator, combined with oversampling, effectively attenuate the in - band quantization noise in the output signal and enhance the signal - to - noise ratio ( snr ) through the shaping of the quantization error

    調制器與過采樣相結合,對量化誤差噪聲進行整形,有效衰減輸出信號的帶內量化噪聲,提高了輸出帶內信噪比( snr ) 。
  7. A novel synthesis method for behavioral design of sigma - delta modulator

    調制器行為級設計方法
  8. A local nonlinear feedback loop ( lnfl ) technique and a sigma - delta modulator ( sdm ) for promoting highly stable oversampling using the lnfl technique

    一種局部非線性回授?路法,以及並利用此一局部非線性回授?路法改良之高穩定性超取樣積分三角調變器。
  9. The c8051f005 micro - processor made by cygnal company is the core of the lead plane, which connects with half - duplax differential transceiver max3471, sigma - delta ad7705. the pressure, altitude and temperature can all be collected and calculate out accurately

    主機以cygnal公司的c8051f005單片機為核心,外接串口通信收發器max3471 、 a / d模數轉換器ad7705 ,可以實現壓力、高度、溫度數據的採集和較為準確的輸出,同時還具有低電壓報警等輔助功能。
  10. So far, sigma - delta modulator becomes the most attractive technology in vlsi when using it to deal with high resolution a / d converter

    調制器結構是迄今為止在vlsi技術中執行高精度a / d變換最吸引人的方法。
  11. Moreover, using the local nonlinear feedback loop technique of this invention attenuates the voltage signal of the sigma - delta modulator, therefore decreasing the power consumption of the overall sigma - delta modulator system

    同時,應用本發明之局部非線性回授?路法亦可以使得積分三角調變器整體系統的電壓訊號衰減,因此可以使得積分三角調變器整體系統的幼率消耗降低。
  12. This paper focuses on the analysis of sigma delta modulation theories such as mathematics models, noise shaping characteristics, etc. combined with traditional pll fractional - n synthesizers structures, a project of sigma delta modulator is proposed, and the algorithmic analysis is implemented by fpga

    本文在闡述-調制理論,分析其數學模型,噪聲整形特性基礎上,結合傳統小數分頻合成器,提出了-調制小數分頻鎖相環頻率合成器實現方案,及其在fpga里的調制器演算法。
  13. 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。
  14. The principles of sigma - delta modulator have been discussed firstly and the influences of structure and parameters on resolution have been analyzed. then on the base of theories, the simulink toolbox of matlab has been used to make behavior simulation and fft analyse of two main structures : 2 - 1 - 1 and 2 - 2. the related parameters of modulator such as : psd, sndr and enob have been gotten by simulink toolbox on the conditions of different oversampling rates. from the analyses above, topology of modulator has been chosen

    調制器的原理進行了介紹,分析了各種結構及參數對調制器精度的影響;其次,在理論指導的基礎上,利用matlab的simulink工具包對調制器兩種主要級聯結構: 2 - 1 - 1和2 - 2結構進行了行為級模擬和fft分析,得出了在不同過采樣率條件下,兩種結構調制器的功率譜密度、信噪失真比以及有效位數,通過比較確定了調制器的拓撲結構。
  15. The results indicate that sigma delta modulation could improve spurs of fractional - n frequency synthesizer in a certain extent

    研究表明, -調制技術可以在一定程度改善小數分頻的雜散。
  16. Finally it give detailed process of design a 18 bits single - loop delta - sigma adc and give the whole project a concise introduce

    最後,將此解決方案運用在以上項目中,並對整個項目進行了簡要地描述。
  17. This paper is finished based upon a part of the project, which is the design of delta - sigma adc in a high precision electrical meter chip. i introduce the basic theory of delta - sigma adc in detail and bring forward a way to design 18 bits delta - sigma adc which is successfully used in the project, at the first time the paper introduce the the basic theory of delta - sigma adc and two typical decimation fir digital filters

    本論文主要基於「一種高精度脈沖輸出的電能計量集成電路」項目中關于delta - sigma模數轉換器的設計部分,論文中在對delta - sigma模數轉換器原理進行深入理解的基礎上,提出了一種高精度delta - sigma模數轉換器的解決方案,並運用於以上項目中取得很好的效果。
  18. The important study is the electric parameter measurement system which is achieved with sigma - delta a / d converter and dsp " sampling to three phrase voltage and current. its function includes the measurement of current, voltage, frequency, phrase, power, factor, active power and energy, reactive power and energy

    本文主要研究了用? a d轉換器和dsp處理器對工頻三相電壓、電流進行數字采樣,再用數字低通濾波器實現對三相電參數進行測量的測量系統。其主要功能包括對電流、電壓、頻率、相位、功率因數、有功功率、有功電能、無功功率、無功電能等測量,並具有測量數據并行輸出介面。
  19. Sigma delta modulation frequency synthesis is an advanced technology that applies in pll ( phase - locked loop ) frequency synthesizer, which could transform the spurs created by fractional - n synthesizers into phase noise that could be filtered by inherent low - pass identity in pll

    此技術應用-調制將鎖相環頻率合成器中分數分頻器產生的相位雜散轉化為相位噪聲,通過鎖相環本身低通濾波特性濾除,從而使用單環即可獲得很高頻率解析度和極低的相位雜散。
  20. In the design, new research and technology are learned about, two modulation ways, pwm and sigma - delta, which can be used to develop digital amplifiers are compared, and theories about 1 - bit technology are studied. then, according to the simulation by matlab, factors which influence system function and parameters which control the work of parts are discussed

    該課題研究了當今數字功率放大器的發展動態以及相關的技術原理,比較了用於實現數字功放的兩種主要方式: pwm和sigma - delta調制方式,結合matlab模擬提出了系統中各模塊需要的基本參數、影響系統性能的相關因素。
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