amplitude modulation

简明释义

振幅调制

英英释义

例句

1.The process of amplitude modulation is essential in television broadcasting.

在电视广播中，调幅过程是至关重要的。

2.The radio station uses amplitude modulation to transmit its signals over long distances.

这个广播电台使用调幅将信号传输到很远的地方。

3.Many AM radios rely on amplitude modulation for clear audio reception.

许多AM收音机依赖于调幅来获得清晰的音频接收。

4.An engineer explained how amplitude modulation affects signal quality.

一位工程师解释了调幅如何影响信号质量。

5.In amplitude modulation, the amplitude of the carrier wave is varied in accordance with the information signal.

在调幅中，载波的振幅根据信息信号的变化而变化。

作文

Amplitude modulation (AM) is a method of varying the strength of a broadcast signal in relation to the information being sent. This technique has been widely used in electronic communication, especially in radio broadcasting. By modulating the amplitude of a carrier wave, it is possible to transmit information such as audio signals over long distances. The concept of amplitude modulation is fundamental to understanding how traditional radio works, and it plays a crucial role in the transmission of sound and music. In essence, amplitude modulation involves altering the height of the carrier wave according to the audio signal. When a sound wave, which can be anything from music to speech, is introduced, it changes the amplitude of the carrier wave. This change is what encodes the audio information into the signal that can be transmitted. The receiver then demodulates the signal, extracting the original audio from the altered carrier wave. The advantages of amplitude modulation include its simplicity and the ability to cover vast distances. AM radio waves can travel far and are less affected by obstacles like buildings and hills compared to other forms of modulation. However, this method also has its disadvantages. For instance, amplitude modulation is more susceptible to noise and interference, which can distort the signal and affect the quality of the audio being transmitted. Despite the rise of digital communication methods, amplitude modulation remains relevant today. Many AM radio stations continue to operate, providing news, talk shows, and music to audiences worldwide. Additionally, amplitude modulation principles are also applied in various technologies, including aviation communications and some types of television broadcasting. Understanding amplitude modulation is not just important for those in the field of electronics or communication; it also offers insight into the evolution of media technology. As we look back at the history of radio, we see how amplitude modulation paved the way for the development of more complex forms of communication, leading to the rich tapestry of media we enjoy today. In conclusion, amplitude modulation is a significant aspect of communication technology that has shaped the way we receive audio content. It serves as a reminder of the ingenuity behind early broadcasting techniques and continues to play a role in modern communication systems. As technology advances, understanding the principles of amplitude modulation helps us appreciate the foundations upon which our current media landscape is built.

幅度调制（AM）是一种根据所发送的信息变化广播信号强度的方法。这种技术在电子通信中得到了广泛应用，尤其是在广播电台。通过调制载波的幅度，可以将音频信号等信息传输到远距离。理解幅度调制的概念对于理解传统无线电的工作原理至关重要，它在声音和音乐的传输中发挥着关键作用。从本质上讲，幅度调制涉及根据音频信号改变载波的高度。当引入声波时，声波可以是音乐或语音，它会改变载波的幅度。这种变化就是将音频信息编码到可以传输的信号中的过程。接收器然后解调该信号，从改变的载波中提取原始音频。幅度调制的优点包括其简单性和覆盖广泛的能力。与其他调制形式相比，AM无线电波可以传播得很远，并且不易受到建筑物和山丘等障碍物的影响。然而，这种方法也有其缺点。例如，幅度调制对噪声和干扰更敏感，这可能会扭曲信号并影响传输音频的质量。尽管数字通信方法日益兴起，幅度调制今天仍然相关。许多AM电台继续运作，为全球听众提供新闻、谈话节目和音乐。此外，幅度调制原理还应用于各种技术中，包括航空通信和某些类型的电视广播。理解幅度调制不仅对电子或通信领域的人士重要；它还提供了对媒体技术演变的深入理解。当我们回顾无线电的历史时，我们看到幅度调制如何为更复杂的通信形式的发展铺平道路，导致我们今天享受的丰富媒体格局。总之，幅度调制是通信技术的重要方面，塑造了我们接收音频内容的方式。它提醒我们早期广播技术背后的独创性，并继续在现代通信系统中发挥作用。随着技术的进步，理解幅度调制的原理帮助我们欣赏构建我们当前媒体环境的基础。