modulating signal

简明释义

调制信号

英英释义

例句

1.During the transmission process, the quality of the modulating signal (调制信号) can significantly affect the received audio clarity.

在传输过程中，调制信号（modulating signal）的质量可以显著影响接收音频的清晰度。

2.The modulating signal (调制信号) is crucial for encoding information onto a radio frequency.

对于将信息编码到无线电频率上，调制信号（modulating signal）是至关重要的。

3.In a radio transmitter, the audio input serves as the modulating signal (调制信号) that varies the amplitude of the carrier wave.

在无线电发射器中，音频输入作为调制信号（modulating signal），改变载波的幅度。

4.Digital modulation techniques use a binary stream as the modulating signal (调制信号) to represent data.

数字调制技术使用二进制流作为调制信号（modulating signal）来表示数据。

5.In AM radio, the modulating signal (调制信号) is the sound wave that modifies the amplitude of the carrier wave.

在调幅广播中，调制信号（modulating signal）是改变载波幅度的声波。

作文

In the realm of telecommunications and signal processing, the term modulating signal refers to the input signal that is used to modify another signal, typically a carrier wave. This process of modulation is crucial for effective transmission of information over various media, such as radio waves, optical fibers, and even through the air. Understanding the concept of a modulating signal is essential for anyone interested in communications technology, as it forms the backbone of how data is encoded and sent from one point to another.To elaborate, a modulating signal can be any form of signal that carries information, such as audio, video, or data signals. For instance, when you listen to your favorite radio station, the music or voice you hear is being transmitted via electromagnetic waves. These waves are generated by a transmitter that modulates a carrier wave using the modulating signal which, in this case, is the audio signal. The carrier wave, usually at a much higher frequency, is altered in amplitude, frequency, or phase according to the characteristics of the modulating signal. This alteration allows the information to be effectively carried over long distances without significant loss.There are several types of modulation techniques that utilize modulating signals, including Amplitude Modulation (AM), Frequency Modulation (FM), and Phase Modulation (PM). Each of these techniques has its own advantages and applications. For example, AM is widely used in traditional radio broadcasting, while FM is preferred for high-fidelity music transmission due to its better noise resistance. Understanding how these techniques work requires a solid grasp of what a modulating signal is and how it interacts with the carrier wave.Moreover, in digital communications, the modulating signal takes on an even more sophisticated role. In this context, the information is often represented in binary form, where the modulating signal is used to create a series of pulses that represent the data being transmitted. Techniques such as Quadrature Amplitude Modulation (QAM) combine both amplitude and phase variations to encode multiple bits of information into a single symbol, making efficient use of bandwidth.The importance of modulating signals extends beyond just telecommunications; they are also fundamental in various fields such as radar systems, television broadcasting, and even medical imaging technologies like MRI. Each of these applications relies on the ability to encode information onto a carrier wave, demonstrating the versatility and critical nature of the modulating signal in modern technology.In conclusion, the concept of a modulating signal is integral to the field of communications. It enables the transmission of information across vast distances and through various mediums, ensuring that we can connect and communicate effectively in our increasingly digital world. Whether it’s through the airwaves of a radio station or the fiber optics of the internet, the modulating signal plays a pivotal role in shaping how we share and receive information today. As technology continues to evolve, the principles surrounding modulating signals will remain foundational in the development of new communication methods and devices.

在电信和信号处理领域，术语调制信号指的是用于修改另一个信号（通常是载波波）的输入信号。这种调制过程对于通过各种媒介（如无线电波、光纤甚至空气）有效传输信息至关重要。理解调制信号的概念对于任何对通信技术感兴趣的人来说都是必不可少的，因为它构成了数据如何编码并从一个点传送到另一个点的基础。进一步说，调制信号可以是任何形式的携带信息的信号，如音频、视频或数据信号。例如，当你收听你最喜欢的广播电台时，你听到的音乐或声音是通过电磁波传输的。这些波由一个发射器生成，该发射器使用调制信号对载波波进行调制，在这种情况下，调制信号就是音频信号。载波波通常具有更高的频率，根据调制信号的特征改变其幅度、频率或相位。这种改变使得信息能够有效地在长距离上传输而不会显著损失。有几种利用调制信号的调制技术，包括幅度调制（AM）、频率调制（FM）和相位调制（PM）。这些技术各有优缺点和应用。例如，AM广泛用于传统广播，而FM由于其更好的抗噪声能力，通常用于高保真音乐传输。理解这些技术的工作原理需要对调制信号是什么以及它如何与载波波相互作用有扎实的掌握。此外，在数字通信中，调制信号的角色变得更加复杂。在这种情况下，信息通常以二进制形式表示，其中调制信号用于创建一系列脉冲，代表正在传输的数据。像正交振幅调制（QAM）这样的技术结合了幅度和相位变化，以将多个比特的信息编码到单个符号中，从而有效利用带宽。调制信号的重要性不仅限于电信；它们在雷达系统、电视广播甚至医学成像技术（如MRI）等各个领域都是基础。每个应用都依赖于将信息编码到载波波上的能力，这表明调制信号在现代技术中的多功能性和关键性。总之，调制信号的概念是通信领域不可或缺的一部分。它使得信息能够跨越广阔的距离并通过各种媒介传输，确保我们能够在日益数字化的世界中有效地连接和沟通。无论是通过广播电台的无线电波还是互联网的光纤，调制信号在塑造我们今天分享和接收信息的方式中发挥着关键作用。随着技术的不断发展，围绕调制信号的原理将在新通信方法和设备的发展中保持基础性。