网站首页  英汉词典

请输入您要查询的英文单词:

 

单词 Digital to analogue converter
释义

Digital to analogue converter

中文百科

数字模拟转换器 Digital-to-analog converter

(重定向自Digital to analogue converter)
声卡中的8信道模拟数字转换器
传统的实用数字模拟转换器的阶跃输出示意图
具有数字模拟转换器CD播放器

数字模拟转换器英语:Digital to analog converter,英文缩写:DAC)是一种将数字信号转换为模拟信号(以电流、电压或电荷的形式)的设备。模拟数字转换器(ADC)则是以相反的方向工作。在很多数字系统中(例如计算机),信号以数字方式存储和传输,而数字模拟转换器可以将这样的信号转换为模拟信号,从而使得它们能够被外界(人或其他非数字系统)识别。

数字模拟转换器的常见用法是在音乐播放器中将数字形式存储的音频信号输出为模拟的声音。有的电视机的显像也有类似的过程。数字模拟转换器有时会降低原有模拟信号的精度,因此转换细节常常需要筛选,使得误差可以忽略。

英语百科

Digital-to-analog converter 数位类比转换器

(重定向自Digital to analogue converter)
8-channel Cirrus Logic CS4382 digital-to-analog converter, as used in a soundcard.
Ideally sampled signal.
Piecewise constant output of an idealized DAC lacking a reconstruction filter.  In a practical DAC, a filter or the finite bandwidth of the device smooths out the step response into a continuous curve.
Top-loading CD player and external digital-to-analog converter.

In electronics, a digital-to-analog converter (DAC, D/A, D–A, D2A, or D-to-A) is a function that converts digital data (usually binary) into an analog signal (current, voltage, or electric charge). An analog-to-digital converter (ADC) performs the reverse function. Unlike analog signals, digital data can be transmitted, manipulated, and stored without degradation, albeit with more complex equipment. But a DAC is needed to convert the digital signal to analog to drive an earphone or loudspeaker amplifier in order to produce sound (analog air pressure waves).

随便看

 

英汉网英语在线翻译词典收录了3779314条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2024 encnc.com All Rights Reserved
更新时间:2025/6/17 23:17:55