sideband telephony

简明释义

边带电话

英英释义

例句

1.In amateur radio, operators often prefer sideband telephony 边带电话 for clearer voice transmission.

在业余无线电中，操作员通常更喜欢使用边带电话 sideband telephony以获得更清晰的语音传输。

2.Many commercial ships rely on sideband telephony 边带电话 for reliable long-distance communication.

许多商船依赖于边带电话 sideband telephony进行可靠的远程通信。

3.The new software update improved the quality of sideband telephony 边带电话 on our devices.

新软件更新提高了我们设备上边带电话 sideband telephony的质量。

4.The radio technician explained how sideband telephony 边带电话 works in reducing interference during communication.

无线电技术人员解释了如何通过使用边带电话 sideband telephony来减少通信中的干扰。

5.Using sideband telephony 边带电话 allows for more efficient use of bandwidth in radio communications.

使用边带电话 sideband telephony可以更有效地利用无线电通信中的带宽。

作文

In the realm of telecommunications, various techniques and technologies are employed to facilitate effective communication. One such technique that has gained prominence is sideband telephony, which refers to a method of transmitting voice signals over radio frequencies using sidebands. This approach allows for efficient use of bandwidth and enhances the clarity of transmitted audio. Understanding sideband telephony is essential for anyone interested in the field of radio communications or amateur radio operations.The basic principle behind sideband telephony lies in the modulation of radio waves. In traditional amplitude modulation (AM), the entire signal is transmitted, including the carrier wave and the sidebands. However, with sideband telephony, only one of the sidebands is transmitted, effectively eliminating the carrier wave. This results in a more efficient use of the available frequency spectrum, allowing for more channels to coexist within the same bandwidth.There are two main types of sideband telephony: upper sideband (USB) and lower sideband (LSB). The choice between these two depends on the specific application and frequency band being used. For instance, in amateur radio, operators often prefer USB for higher frequency bands and LSB for lower frequency bands. This distinction is crucial for ensuring clear communication between operators and minimizing interference from other signals.One of the significant advantages of sideband telephony is its ability to maintain audio quality over long distances. When using conventional AM, the audio quality diminishes as the distance increases due to signal degradation and noise. However, with sideband telephony, the absence of the carrier wave contributes to a more robust signal, resulting in clearer audio even at greater distances. This characteristic makes it particularly valuable for maritime and aviation communications, where reliable voice transmission is critical.Moreover, sideband telephony allows for more efficient power usage. Since the carrier wave is not transmitted, less power is consumed during transmission. This efficiency is especially beneficial for portable and battery-operated devices, which are common in emergency communications and remote operations.Despite its advantages, sideband telephony does require more sophisticated equipment and knowledge to operate effectively. Operators must be familiar with the technical aspects of radio frequency propagation, modulation techniques, and tuning their equipment to the correct frequencies. This level of expertise can pose a barrier for some users, but many enthusiasts find the learning process rewarding.In conclusion, sideband telephony represents a significant advancement in the field of telecommunications, offering numerous benefits such as improved audio quality, efficient bandwidth usage, and reduced power consumption. As technology continues to evolve, understanding methods like sideband telephony will be increasingly important for both professionals and hobbyists in the telecommunications industry. Embracing this knowledge not only enhances communication capabilities but also fosters a deeper appreciation for the complexities of radio technology and its applications in our everyday lives.

边带电话是指一种通过无线电频率传输语音信号的方法，采用边带的方式进行传输。这种方法允许更有效地利用带宽，并增强所传输音频的清晰度。理解边带电话对任何对无线通信或业余无线电操作感兴趣的人来说都是至关重要的。边带电话的基本原理在于无线电波的调制。在传统的幅度调制（AM）中，整个信号被传输，包括载波和边带。然而，在边带电话中，仅传输一个边带，有效地消除了载波。这导致可用频谱的更有效使用，使得更多的频道能够在同一带宽内共存。边带电话主要有两种类型：上边带（USB）和下边带（LSB）。选择这两者之间的取决于具体的应用和使用的频段。例如，在业余无线电中，操作员通常在高频段选择USB，而在低频段选择LSB。这一区别对于确保操作员之间的清晰通信和最小化其他信号的干扰至关重要。边带电话的一个显著优势是其在长距离上传递音频质量的能力。当使用传统的AM时，随着距离的增加，音频质量会因信号退化和噪声而下降。然而，使用边带电话时，由于没有载波，信号更为强健，即使在较远的距离上也能实现更清晰的音频。这一特性使其在海事和航空通信中尤为重要，因为可靠的语音传输至关重要。此外，边带电话还允许更有效的功率使用。由于不传输载波，因此在传输过程中消耗的功率较少。这种效率对于便携式和电池供电的设备特别有利，这些设备在紧急通信和远程操作中很常见。尽管有其优势，边带电话确实需要更复杂的设备和知识才能有效操作。操作员必须熟悉无线电频率传播、调制技术和调谐其设备到正确频率的技术细节。这种专业知识的水平可能对某些用户构成障碍，但许多爱好者发现学习过程是值得的。总之，边带电话代表了电信领域的一项重大进步，提供了诸多好处，如改善音频质量、有效利用带宽和减少功耗。随着技术的不断发展，理解像边带电话这样的方法将对电信行业的专业人士和爱好者变得越来越重要。掌握这些知识不仅增强了通信能力，还加深了对无线电技术复杂性及其在我们日常生活中的应用的欣赏。