frequency modulation

简明释义

档

英英释义

例句

1.Many modern communication systems rely on frequency modulation for efficient data transmission.

许多现代通信系统依赖于频率调制进行高效的数据传输。

2.The radio station uses frequency modulation to transmit clearer sound.

这个广播电台使用频率调制来传输更清晰的声音。

3.The clarity of frequency modulation makes it ideal for music broadcasting.

由于频率调制的清晰度，它非常适合音乐广播。

4.Amateur radio operators often experiment with frequency modulation techniques.

业余无线电操作员经常尝试频率调制技术。

5.In frequency modulation, the frequency of the carrier wave is varied to encode information.

在频率调制中，载波的频率被改变以编码信息。

作文

Frequency modulation (FM) is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. The concept of frequency modulation involves varying the frequency of the carrier wave in accordance with the amplitude of the input signal. This technique has revolutionized the way we communicate, allowing for clearer and more reliable transmission of audio signals. Unlike amplitude modulation (AM), where the strength of the signal is varied, frequency modulation maintains a constant amplitude while changing the frequency. This characteristic makes FM less susceptible to noise and interference, which is particularly beneficial in urban environments where multiple signals may overlap.The history of frequency modulation dates back to the early 20th century when engineers were seeking ways to improve the quality of radio transmissions. Edwin Armstrong, an American electrical engineer, is credited with inventing FM in the 1930s. His work laid the foundation for the development of FM radio, which became popular in the 1950s and continues to be widely used today. The clarity of sound provided by frequency modulation made it the preferred choice for music broadcasting, as it captures the nuances of audio much better than AM.One of the key advantages of frequency modulation is its ability to reduce static and other forms of interference that can affect the quality of audio transmission. This is especially important for music and voice broadcasting, where clarity and fidelity are paramount. In addition, frequency modulation allows for a greater range of frequencies to be transmitted, which means more channels can be available for listeners. This has led to the proliferation of FM radio stations across the globe, providing diverse programming options for audiences.In recent years, the principles of frequency modulation have also been applied to digital communication technologies. For instance, many modern wireless communication systems, including cellular networks and Wi-Fi, utilize variations of FM techniques to transmit data efficiently over various distances. The robustness of frequency modulation against noise makes it ideal for these applications, ensuring that signals remain clear even in challenging conditions.Moreover, frequency modulation is not limited to audio broadcasting. It is also used in television broadcasting, where video and audio signals are transmitted simultaneously. The use of FM in television ensures that viewers receive high-quality images and sounds, enhancing the overall viewing experience. Additionally, frequency modulation is utilized in radar technology, where it helps in detecting objects and measuring their distance accurately.In conclusion, frequency modulation is a vital technology in the field of communication that has transformed how we transmit audio and data. Its ability to provide clearer, more reliable signals has made it a staple in radio broadcasting and has paved the way for advancements in digital communications. As technology continues to evolve, the principles of frequency modulation will likely play an even more significant role in shaping the future of communication, ensuring that we stay connected in an increasingly complex world.

频率调制（FM）是一种用于电子通信的技术，最常见于通过无线电载波传输信息。频率调制的概念涉及根据输入信号的幅度变化载波的频率。这项技术彻底改变了我们沟通的方式，使音频信号的传输更加清晰和可靠。与幅度调制（AM）不同，后者是通过改变信号的强度来传输信息，频率调制则保持恒定的幅度，同时改变频率。这一特性使得FM对噪声和干扰的抵抗力更强，这在城市环境中尤为重要，因为多个信号可能会重叠。频率调制的历史可以追溯到20世纪初，当时工程师们正在寻找改善无线电传输质量的方法。爱德温·阿姆斯特朗（Edwin Armstrong），一位美国电气工程师，被认为是在20世纪30年代发明了FM。他的工作为FM无线电的发展奠定了基础，FM无线电在1950年代开始流行，并且至今仍被广泛使用。频率调制提供的声音清晰度使其成为音乐广播的首选，因为它能更好地捕捉音频的细微差别。频率调制的一个关键优势是能够减少静电和其他形式的干扰，这些干扰可能会影响音频传输的质量。这对于音乐和语音广播尤其重要，因为清晰度和保真度至关重要。此外，频率调制允许传输更大范围的频率，这意味着可以为听众提供更多的频道。这导致了全球FM无线电台的激增，为观众提供了多样化的节目选择。近年来，频率调制的原理也应用于数字通信技术。例如，许多现代无线通信系统，包括蜂窝网络和Wi-Fi，利用FM技术的变体高效地传输数据。频率调制对噪声的抗干扰能力使其非常适合这些应用，确保信号在困难条件下仍然清晰。此外，频率调制不仅限于音频广播。它还用于电视广播，其中视频和音频信号同时传输。在电视中使用FM确保观众接收到高质量的图像和声音，增强整体观看体验。此外，频率调制还用于雷达技术，帮助准确检测物体并测量其距离。总之，频率调制是一项在通信领域至关重要的技术，彻底改变了我们传输音频和数据的方式。它提供更清晰、更可靠信号的能力使其成为无线广播的主流，并为数字通信的进步铺平了道路。随着技术的不断发展，频率调制的原理可能将在塑造未来通信方面发挥更重要的作用，确保我们在日益复杂的世界中保持连接。