查询词典 digital signal

The process of creating a DSD signal is conceptually similar to taking a 1-bit delta-sigma analog-to-digital converter and removing the decimator which converts the 1-bit bitstream into multibit PCM.

过程中创造一个信号，渠务署，是在概念上相似，以1位Δ-Σ模拟到数字转换器，并消除decimator转换1位码流成多位的PCM 。

In the receiver,a novel digital method is proposed to demodulate the 2RC CPFSK signal.

在接收机中，使用了一种新颖的数字解调方法实现2RC CPFSK信号的解调。

The digital processing front aims to demodulate I/Q signal and transform sampling frequency.

在数位处理前端的部份是将取样出来的讯号做I/Q讯号的解调变和取样频率的转换。

To overcome this problem, we think to digitized the signal at medium frequency, even RF, and then demodulate it in digital domain.

为克服这一问题，人们考虑在中频，甚至射频就对信号数字化，再在数字域内进行解调。

The design of demultiplex er is developed in this project, which is the component of PCI bus signal digital multiplex system, and the study object is the data transmission of PCI bus in the Magnetic Environment Simulation System of Wireless Communication.

本课题研究的是PCI总线信号数字复接系统——分接子系统的设计，并以通信信号电磁环境模拟器系统中的PCI总线数据传输为具体研究对象。

According to the demand of high magnetic field power supply, reference is increased with a set ramp rate and stops at a set stable value, so reference system is composed of digital setting and digit to analog converting circuit. But the stability of reference is mostly guaranteed by the performance of D/A circuit, so D/A circuit is particularly studied in reference system. The scheme of D/A circuit, the selection of DAC and its voltage reference, hardware anti-jamming design and PCB design are discussed in detail, and software of remote control and PLC are discussed in brief. Zero-flux DC current transformer well satisfies the demands of the high stability of Load current detection unit, so the principle of zero-flux DC current transformer is analyzed; in the mean time a project which detects the long term stability is designed. During 8 hours, analog signal which is detected with high precision digit multimeter is recorded in computer at 1HZ frequency by GPIB communication. The drift error source and related parameters are explained in the compare-amplify part. Detailed subtraction circuit is designed; also amplifier chip and periphery components are selected and verified according to the theory of error analysis.

根据强磁场电源的需求，参考源应按照软件设定的斜率逐渐上升到设定稳态值，则参考源系统应由数字给定和数模转换电路两大部分组成，而参考源的稳定度主要依靠完成数模转换功能的模拟电路的性能来保证，因此本文对参考源系统的研究以数模转换电路为重点，分别从电路方案的确定、数模转换芯片及其基准电压源的选取和验证、电路板硬件抗干扰和PCB设计几方面进行了论述，然后对数字给定部分的远控组态和PLC程序设计作了简要介绍；采用零磁通原理的直流电流转换器很好地满足了对负载电流检测单元高稳定度的需求，本文详细分析了零磁通检测的原理，并在选定此种类型电流转换器的基础上设计了一套检测长期稳定度的方案，8小时内以1秒为采样周期，通过计算机Labview程序和高精度数字电压表的GPIB通讯，将被高精度数字电压表数字化后的模拟信号采样值连续记录至计算机中；比较放大环节简要阐述了漂移产生的原因和相关参数指标，确定了具体的减法电路形式，并根据误差分析理论对运算放大器和外围元器件进行了选取和验证。

Digital data acquisition principles and practices are discussed, including the relationship between the sampling rate and signal frequency.

数字数据采集的原则和做法进行了讨论，包括之间的采样率和信号频率的关系。

That's how your digital TV signal is formed.

这就是你的数字电视信号的组成。

The methods of digital speech signal short-time processing with FPGA are presented in this paper.

0引言语音信号是非平稳过程，是时变的，但语音信号的特性随时间变换是缓慢的，在短时间内可以认为是局部平稳的。

As the increasing demands in communication and computer area, approaches should be found to compress digital speech signal with lo...

由于通讯和计算机等领域的需要，数字表示的语音信号要以尽可能低的码率进行压缩处理并保持一定音质。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。