amplitude/frequency modulation

简明释义

振幅/频率调制;

英英释义

例句

1.The engineer explained how amplitude modulation works in analog radio broadcasting.

工程师解释了幅度调制在模拟广播中的工作原理。

2.In modern communication systems, frequency modulation is often preferred for its better sound quality.

在现代通信系统中，通常优先选择频率调制，因为它提供更好的音质。

3.Using frequency modulation can reduce the impact of noise on the transmitted signal.

使用频率调制可以减少噪声对传输信号的影响。

4.The radio station uses amplitude modulation to broadcast its signal over long distances.

这个广播电台使用幅度调制在远距离内传播信号。

5.The old television sets relied on amplitude modulation for their picture transmission.

旧款电视机依赖于幅度调制进行画面传输。

作文

In the world of communications, understanding the principles of signal transmission is crucial. One of the fundamental techniques used in this field is known as amplitude/frequency modulation. This method plays a significant role in how information is encoded and transmitted over various media, including radio waves and digital channels.To begin with, let’s break down what amplitude/frequency modulation entails. Amplitude modulation (AM) involves varying the strength or amplitude of the carrier wave in accordance with the information signal. This means that the height of the waves changes to convey different sounds or data. For instance, when you listen to an AM radio station, the audio signal from the broadcaster modulates the amplitude of the radio wave being transmitted. As a result, the radio receiver can decode these variations and reproduce the original sound.On the other hand, frequency modulation (FM) alters the frequency of the carrier wave rather than its amplitude. In FM, the information signal changes the frequency of the wave, which allows for a more robust transmission with less susceptibility to noise and interference. This is why FM radio often provides clearer sound quality compared to AM. The difference between these two types of modulation is not merely technical; it significantly impacts the quality and reliability of the transmitted signal.Both amplitude/frequency modulation techniques have their advantages and disadvantages. AM is simpler to implement and requires less bandwidth, making it suitable for long-distance transmissions. However, it is more prone to noise and interference, which can distort the signal. In contrast, FM offers improved sound quality and resistance to interference but requires more bandwidth, which can limit the number of stations available in a given frequency range.The applications of amplitude/frequency modulation extend beyond traditional radio broadcasting. For example, in television broadcasting, both AM and FM are used to transmit video and audio signals effectively. Additionally, modern digital communications utilize variations of these modulation techniques to ensure efficient and reliable data transmission over the internet and mobile networks.Understanding amplitude/frequency modulation is essential for anyone interested in the fields of telecommunications, broadcasting, or electronics. It serves as a foundational concept that underpins many modern technologies. As we advance into an era dominated by digital communication, the principles of modulation will continue to evolve, leading to even more sophisticated methods of transmitting information.In conclusion, amplitude/frequency modulation represents a critical aspect of communication technology. By manipulating either the amplitude or frequency of a carrier wave, we can effectively encode and transmit information across various platforms. As we continue to innovate and improve our communication systems, the importance of understanding these modulation techniques will only grow, ensuring that we can adapt to new challenges and opportunities in the ever-changing landscape of technology.

在通信领域，理解信号传输的原理至关重要。这个领域中使用的一种基本技术被称为幅度/频率调制。这种方法在信息如何编码和通过各种媒介（包括无线电波和数字通道）传输方面发挥着重要作用。首先，让我们分析一下幅度/频率调制的含义。幅度调制（AM）涉及根据信息信号变化载波的强度或幅度。这意味着波的高度会发生变化，以传达不同的声音或数据。例如，当你收听AM广播电台时，广播者的音频信号会调制所传输的无线电波的幅度。因此，收音机接收器可以解码这些变化并重现原始声音。另一方面，频率调制（FM）则改变载波波的频率，而不是其幅度。在FM中，信息信号会改变波的频率，这允许更强大的传输，并且对噪声和干扰的抵抗力更强。这就是为什么FM广播通常比AM提供更清晰的音质。这两种调制类型之间的区别不仅仅是技术上的；它显著影响传输信号的质量和可靠性。这两种幅度/频率调制技术都有其优缺点。AM实现起来更简单，并且需要的带宽较小，因此适合长距离传输。然而，它更容易受到噪声和干扰的影响，这可能会扭曲信号。相比之下，FM提供了更好的音质和对干扰的抵抗力，但需要更多的带宽，这可能限制了某一频率范围内可用的电台数量。幅度/频率调制的应用超出了传统广播的范围。例如，在电视广播中，AM和FM都被用来有效地传输视频和音频信号。此外，现代数字通信利用这些调制技术的变体，以确保互联网和移动网络上的高效和可靠的数据传输。理解幅度/频率调制对于任何对电信、广播或电子学感兴趣的人来说都是必不可少的。它作为一个基础概念，支撑着许多现代技术。随着我们进入一个以数字通信为主导的时代，调制原理将继续发展，导致更复杂的信息传输方法。总之，幅度/频率调制代表了通信技术的一个关键方面。通过操纵载波波的幅度或频率，我们可以有效地编码和通过各种平台传输信息。随着我们不断创新和改善通信系统，理解这些调制技术的重要性只会增加，确保我们能够适应快速变化的技术环境中的新挑战和机遇。