narrow band frequency modulation

简明释义

窄频带调频

英英释义

例句

1.The radio station utilizes Narrow Band Frequency Modulation to transmit its signals clearly over long distances.

该广播电台利用窄带频率调制在长距离内清晰地传输信号。

2.Many amateur radio operators prefer Narrow Band Frequency Modulation for its simplicity and effectiveness.

许多业余无线电操作员更喜欢窄带频率调制，因为它简单有效。

3.In telecommunications, Narrow Band Frequency Modulation is preferred for voice communications due to its efficient use of bandwidth.

在电信中，由于其对带宽的高效使用，窄带频率调制被更倾向于用于语音通信。

4.The Narrow Band Frequency Modulation technique allows for clearer communication in crowded frequency bands.

窄带频率调制技术允许在拥挤的频率带中实现更清晰的通信。

5.The technician explained how Narrow Band Frequency Modulation can reduce noise in the audio signal.

技术员解释了窄带频率调制如何减少音频信号中的噪声。

作文

In the world of telecommunications, various methods are employed to transmit information effectively. One such method is known as narrow band frequency modulation, which plays a crucial role in ensuring clear and efficient communication over radio frequencies. This technique is particularly important in scenarios where bandwidth is limited and high-quality transmission is necessary. narrow band frequency modulation (窄带频率调制) allows for the encoding of information onto a carrier wave by varying its frequency within a narrow bandwidth. This modulation technique is essential for applications such as two-way radios, walkie-talkies, and certain types of broadcast radio stations.The principle behind narrow band frequency modulation is relatively straightforward. By changing the frequency of the carrier signal in accordance with the amplitude of the input signal, information can be transmitted without significant distortion. This is particularly beneficial in environments where noise and interference are prevalent, as narrow band frequency modulation can provide a more robust signal compared to other modulation techniques like amplitude modulation (AM).One of the key advantages of using narrow band frequency modulation is its efficiency in utilizing bandwidth. In situations where multiple signals must coexist without interfering with one another, this method allows for more channels to be packed into a limited frequency spectrum. This is especially important in urban areas where radio frequencies are crowded. By employing narrow band frequency modulation, operators can ensure that their communications remain clear and distinct from other signals.Moreover, narrow band frequency modulation is also known for its resilience against signal degradation. The frequency variations used in this modulation technique make it less susceptible to noise, which is a common issue in wireless communication. As a result, users can experience clearer audio and fewer interruptions, making it an ideal choice for emergency services and critical communications.Despite its advantages, narrow band frequency modulation does have some limitations. For instance, while it excels in environments with limited bandwidth, it may not provide the same level of audio quality as wideband frequency modulation in situations where bandwidth is not a constraint. Additionally, the complexity of implementing narrow band frequency modulation systems can sometimes lead to higher costs in terms of equipment and maintenance.In conclusion, narrow band frequency modulation is a vital technology in the field of telecommunications, providing a means of transmitting information effectively in environments where bandwidth is limited. Its ability to reduce noise interference and maximize channel capacity makes it an invaluable tool for many communication applications. As technology continues to evolve, the importance of understanding and utilizing narrow band frequency modulation will only grow, ensuring that we can maintain clear and reliable communication in an increasingly connected world.

在电信领域，各种方法被用来有效地传输信息。其中一种方法被称为窄带频率调制，它在确保无线频率的清晰和有效通信中发挥着至关重要的作用。这种技术在带宽有限且需要高质量传输的场景中特别重要。窄带频率调制允许通过在窄带宽内改变载波波的频率来将信息编码到载波波上。这种调制技术对于对讲机、步话机和某些类型的广播电台等应用至关重要。窄带频率调制背后的原理相对简单。通过根据输入信号的幅度变化载波信号的频率，可以在没有显著失真的情况下传输信息。这在噪声和干扰普遍存在的环境中尤为有利，因为与其他调制技术（如幅度调制（AM））相比，窄带频率调制可以提供更强大的信号。使用窄带频率调制的一个主要优点是其在利用带宽方面的效率。在多个信号必须共存而不相互干扰的情况下，这种方法允许在有限的频谱中打包更多的频道。这在无线电频率拥挤的城市地区尤其重要。通过采用窄带频率调制，操作员可以确保他们的通信保持清晰并与其他信号区分开。此外，窄带频率调制也以其抵抗信号退化的能力而闻名。该调制技术中使用的频率变化使其对噪声的敏感性降低，而噪声是无线通信中的常见问题。因此，用户可以体验到更清晰的音频和更少的中断，使其成为紧急服务和关键通信的理想选择。尽管有其优点，窄带频率调制也有一些局限性。例如，虽然它在带宽有限的环境中表现出色，但在带宽没有限制的情况下，它可能无法提供与宽带频率调制相同水平的音频质量。此外，实施窄带频率调制系统的复杂性有时会导致设备和维护成本的增加。总之，窄带频率调制是电信领域的一项重要技术，为在带宽有限的环境中有效传输信息提供了一种手段。其减少噪声干扰和最大化频道容量的能力使其成为许多通信应用中不可或缺的工具。随着技术的不断发展，理解和利用窄带频率调制的重要性只会增加，从而确保我们能够在日益互联的世界中保持清晰可靠的通信。