amplitude modulation

简明释义

爹

英英释义

例句

1.Engineers often test amplitude modulation systems to ensure optimal performance.

工程师们经常测试幅度调制系统以确保最佳性能。

2.In amplitude modulation, the strength of the carrier wave is varied to encode information.

在幅度调制中，载波的强度被改变以编码信息。

3.Many older AM radios rely on amplitude modulation for receiving broadcasts.

许多老式AM收音机依赖于幅度调制接收广播。

4.The radio station uses amplitude modulation to broadcast its signals clearly.

该广播电台使用幅度调制清晰地广播信号。

5.The clarity of sound in amplitude modulation can be affected by interference.

在幅度调制中，声音的清晰度可能会受到干扰的影响。

作文

Amplitude modulation (AM) is a fundamental technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. This method involves varying the amplitude of the carrier wave in accordance with the information signal that needs to be transmitted. To understand this concept better, it is essential to break down its components and explore its applications in modern technology.The principle behind amplitude modulation (幅度调制) lies in the modulation of a carrier wave. A carrier wave is a specific frequency wave that can carry information. When we need to send audio signals, such as music or voice, these signals are superimposed onto the carrier wave by changing its amplitude. The higher the amplitude, the more intense the signal, which translates to louder sound when it is received and demodulated.One of the primary advantages of amplitude modulation (幅度调制) is its simplicity. The technology required for AM transmission and reception is relatively straightforward, making it accessible for various applications. For instance, AM radio broadcasting utilizes this technique to transmit audio content over long distances. Because the amplitude of the signal can vary significantly, AM radio can cover a broader area compared to other modulation techniques, such as frequency modulation (FM).However, amplitude modulation (幅度调制) does have its drawbacks. One major issue is its susceptibility to noise and interference. Since AM signals vary in amplitude, they can be easily affected by environmental factors, such as electrical storms or physical obstacles. This leads to a lower quality of sound compared to FM, which maintains a more consistent frequency regardless of external influences.Despite its limitations, amplitude modulation (幅度调制) continues to play a significant role in various fields. Beyond radio broadcasting, it is also used in aviation communication, where pilots rely on AM signals for clarity and reliability in their transmissions. Additionally, amplitude modulation (幅度调制) has applications in television broadcasting, particularly in analog TV systems, where video and audio signals are transmitted together using AM.In conclusion, amplitude modulation (幅度调制) is a vital technique in the world of electronic communication. Its ability to transmit information over long distances with relative ease has made it a popular choice for various applications, despite its vulnerability to interference. As technology continues to evolve, understanding the principles of amplitude modulation (幅度调制) remains crucial for anyone interested in the field of communications. Whether in radio, aviation, or television, the impact of this modulation technique is undeniable and will likely continue to influence the way we communicate in the future.

幅度调制（AM）是一种在电子通信中使用的基本技术，最常用于通过无线电载波传输信息。该方法涉及根据需要传输的信息信号变化载波的幅度。为了更好地理解这个概念，有必要分解其组成部分并探讨其在现代技术中的应用。幅度调制的原理在于对载波的调制。载波是可以承载信息的特定频率波。当我们需要发送音频信号，如音乐或声音时，这些信号通过改变载波的幅度叠加到载波上。幅度越高，信号越强烈，这在接收和解调时转化为更大的声音。幅度调制的主要优点之一是其简单性。AM传输和接收所需的技术相对简单，使其适用于各种应用。例如，AM广播利用这一技术在较长距离上传输音频内容。由于信号的幅度可能显著变化，AM广播可以覆盖比其他调制技术（如频率调制（FM））更广泛的区域。然而，幅度调制确实存在一些缺点。其中一个主要问题是它对噪声和干扰的敏感性。由于AM信号的幅度变化，它们很容易受到环境因素的影响，例如电气风暴或物理障碍。这导致声音质量低于FM，后者无论外部影响如何都能保持更一致的频率。尽管存在局限性，幅度调制仍在各个领域发挥着重要作用。除了广播外，它还用于航空通信，飞行员依赖AM信号以确保通信的清晰度和可靠性。此外，幅度调制还应用于电视广播，特别是在模拟电视系统中，其中视频和音频信号一起使用AM进行传输。总之，幅度调制是电子通信世界中的一种重要技术。它能够以相对简单的方式远距离传输信息，使其成为各种应用中的流行选择，尽管它容易受到干扰。随着技术的不断发展，理解幅度调制的原理对于任何对通信领域感兴趣的人来说仍然至关重要。无论是在广播、航空还是电视中，这种调制技术的影响都是不可否认的，并且可能会继续影响我们未来的交流方式。