电子与通信工程专业英语Unit 2 Pulse Code Modulation 热度: 通信工程专业英语 课件 Unit 3:Pulse Code Modulation、Unit 4:Common-Channel Signaling 热度: Pulse Width Modulation for Power Converters. Principles and 热度: PulseCodeModulation Theadvantagesofdigitalcommunicationsystems(cf.analoguecommunication) ...
Pulse Position Modulation (PPM) Modulation in which the temporal positions of the pulses are varied in accordance with some characteristic of the modulating signal. SAMPLING Process of converting a continuous time signal to an equivalent discrete time signal. Continuous time signal x(t) is applied a...
Unit 3：Pulse Code Modulation 通信工程专业英语 ——SpecializedEnglish 第二部分通信技术 Unit3：PulseCodeModulation——脉冲编码调制 专业英语基础知识 科技英语中的几个关键问题 1.词汇和句型：词汇是语言的基础，科技英语中的词汇可分为四类:普通词汇、专业词汇、专业缩写词汇和转意词汇。普通词汇：这些词汇在...
PCM、PWM、PPM 脉冲编码调制（Pulse Code Modulation，PCM），简称脉码调制是一种模拟信号的数码化方法。PCM将信号的强度依照同样的间距分成数段，然后用独特的数码记号（通常是二进制）来量化。PCM常被用于数码电信系统上，在数字视频中它也是标准，但是PCM并不流行于诸如DVD或DVR的消费性商品上，因为它需要相当大的...
通信工程专业英语——Specialized English
脉冲编码调制(PulseCodeModulation,PCM),简称脉码调制 是一种模拟信号的数码化方法。PCM将信号的强度依照同样的间距分成数段, 然后用独特的数码记号(通常是二进制)来量化。PCM常被用于数码电信系统上, 在数字视频中它也是标准,但是PCM并不流行于诸如DVD或DVR的消费性商品上, ...
PCM(Pulse Code Modulation)脉冲编码调制,是将连续的模拟信号变换成离散的数字信号的过程,是模数转换的实例化,步骤包括采样、量化、编码。在调制过程中将模拟信号每隔一定时间进行采样,使其离散化,同时将采样值按分层单位四舍五入取整量化,同时将采样值按一组二进制码来表示采样脉冲的幅值。 1、采样—通常为8000Hz:...
Modulation In the diagram，a sine wave (red curve) is sampled and quantized for pulse code modulation．The sine wave is sampled at regular intervals，shown as ticks on the x-axis．For each sample，one of the available values (ticks on the y-axis) is chosen by some algorithm (in this ...
PCM(Pulse-code modulation)脉冲编码调制 在音频处理中,我们会经常听到PCM数据,那么什么是PCM数据呢? PCM数据就是模拟信号经过PCM以后的数字信号,PCM就是把音频信号由模拟信号(时间连续,取值连续)转为数字信号(时间离散,取值离散)的过程。数字信号有很多优点,因此一般传输的信号都是数字信号。
2026/52. Class 39(1) [Also in Groups XXXVIII and XL(c)] Relates to pulse code modulating systems (see Group XL(c)) some of the embodiments of which comprise specially-designed cathode-ray tubes. In a cathode-ray tube binary coder, Fig. 5, the flattened electron beam 56 from cathode...