amplitude modulation double sideband

简明释义

双边带调幅

英英释义

例句

1.The concept of amplitude modulation double sideband is essential for understanding analog broadcasting.

理解模拟广播的关键在于掌握幅度调制双边带的概念。

2.Using amplitude modulation double sideband, the signal can travel longer distances without significant loss.

使用幅度调制双边带，信号可以在没有显著损失的情况下传播更长的距离。

3.In amateur radio, amplitude modulation double sideband is a popular mode for voice communication.

在业余无线电中，幅度调制双边带是语音通信的一种流行模式。

4.The radio station uses amplitude modulation double sideband to transmit high-quality audio signals.

该广播电台使用幅度调制双边带来传输高质量的音频信号。

5.The design of the transmitter was optimized for amplitude modulation double sideband to improve efficiency.

发射机的设计经过优化，以提高幅度调制双边带的效率。

作文

Amplitude modulation (AM) is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. The term amplitude modulation double sideband refers specifically to a type of amplitude modulation where the carrier wave is modulated in such a way that both the upper and lower sidebands are transmitted. This means that the original signal is represented by variations in the amplitude of the carrier wave, resulting in two sidebands: one above the carrier frequency and one below it. In essence, when we talk about amplitude modulation double sideband (AM-DSB), we are discussing the fundamental method of transmitting information that has been widely used since the early days of radio. The simplicity of the AM-DSB technique makes it an attractive option for various applications, including AM radio broadcasting. In this method, the amplitude of the carrier wave varies in accordance with the audio signal being sent, allowing listeners to receive sound through their radios.One of the main advantages of amplitude modulation double sideband is its ability to cover long distances. AM signals can travel farther than other modulation methods, such as frequency modulation (FM), especially during nighttime due to the reflection of radio waves off the ionosphere. This property has made AM radio a popular choice for broadcasting news, music, and talk shows across vast geographic areas.However, amplitude modulation double sideband also has its drawbacks. One significant issue is the susceptibility to noise and interference. Because AM-DSB transmits both sidebands, it can pick up static and other unwanted signals that can distort the original audio. This is particularly problematic in urban areas with many electronic devices emitting electromagnetic interference. Consequently, while AM-DSB remains a staple in broadcasting, it has been largely overshadowed by FM and digital transmission methods, which offer better sound quality and resistance to interference.Despite these challenges, understanding amplitude modulation double sideband is crucial for anyone interested in the field of communications. It serves as a foundation for more advanced concepts in signal processing and modulation techniques. Furthermore, the principles behind AM-DSB are still relevant today, not only in traditional radio but also in various forms of data transmission and telecommunications.In conclusion, the concept of amplitude modulation double sideband is a vital part of our communication history. It illustrates the evolution of technology and the ongoing quest for effective ways to transmit information over long distances. While newer technologies may have taken precedence, the legacy of AM-DSB continues to influence modern communication systems, reminding us of the importance of understanding the basics of how we connect with one another through the airwaves.

幅度调制（AM）是一种用于电子通信的技术，最常用于通过无线电载波传输信息。术语幅度调制双边带特指一种幅度调制类型，在这种类型中，载波波被调制，以便同时传输上下两个边带。这意味着原始信号通过载波波的幅度变化来表示，从而产生一个高于载波频率的边带和一个低于载波频率的边带。从本质上讲，当我们谈论幅度调制双边带（AM-DSB）时，我们是在讨论自无线电早期以来广泛使用的信息传输基本方法。AM-DSB技术的简单性使其在各种应用中成为一种有吸引力的选择，包括AM广播。在这种方法中，载波波的幅度根据所发送的音频信号而变化，使听众能够通过收音机接收声音。幅度调制双边带的主要优点之一是其覆盖长距离的能力。AM信号可以比其他调制方法，如频率调制（FM），传播得更远，特别是在夜间，由于无线电波在电离层的反射。这一特性使得AM广播成为在广阔地理区域内传播新闻、音乐和脱口秀的热门选择。然而，幅度调制双边带也有其缺点。一个显著的问题是对噪声和干扰的敏感性。由于AM-DSB同时传输两个边带，因此它可能会接收到静电和其他不必要的信号，这些信号会扭曲原始音频。这在城市地区尤其成问题，因为许多电子设备会发出电磁干扰。因此，尽管AM-DSB仍然是广播的主流，但它在很大程度上被FM和数字传输方法所取代，这些方法提供了更好的音质和抗干扰能力。尽管面临这些挑战，理解幅度调制双边带对于任何对通信领域感兴趣的人来说都是至关重要的。它为信号处理和调制技术中的更高级概念奠定了基础。此外，AM-DSB背后的原理在今天仍然相关，不仅在传统无线电中，而且在各种数据传输和电信形式中。总之，幅度调制双边带的概念是我们通信历史的重要组成部分。它展示了技术的演变以及有效传输信息的持续追求。尽管更新的技术可能占据了主导地位，但AM-DSB的遗产仍然继续影响现代通信系统，提醒我们理解我们通过无线电波相互联系的基本原理的重要性。