vestigial sideband

简明释义

残留边带

英英释义

例句

1.The audio engineer noted that the recording had a noticeable vestigial sideband, which was affecting the overall sound quality.

音频工程师注意到录音中有明显的残余边带，这影响了整体音质。

2.The presence of a vestigial sideband can indicate poor modulation techniques in the transmission.

存在残余边带可能表明传输中的调制技术不佳。

3.During the signal analysis, we discovered a vestigial sideband that was causing interference with other channels.

在信号分析过程中，我们发现一个残余边带，这导致与其他频道的干扰。

4.The vestigial sideband in the transmission was so faint that it went unnoticed during routine checks.

传输中的残余边带如此微弱，以至于在常规检查中未被注意。

5.To improve clarity, we needed to filter out the vestigial sideband from the main signal.

为了提高清晰度，我们需要从主信号中滤除残余边带。

作文

In the realm of telecommunications and signal processing, the term vestigial sideband refers to a technique used in amplitude modulation (AM) systems. This method allows for the transmission of information while minimizing bandwidth usage, making it an essential concept in modern communication technologies. The vestigial sideband (余留边带) is essentially a remnant of the sidebands that are generated during the modulation process, which can be selectively filtered out to optimize the signal. To understand the significance of vestigial sideband, we must first delve into the basics of amplitude modulation. In AM, a carrier wave is modulated by an audio signal, producing two sidebands: the upper and lower sidebands. These sidebands contain the same information and are symmetrically placed around the carrier frequency. However, transmitting both sidebands can be inefficient, as they occupy a considerable amount of bandwidth. This inefficiency becomes particularly problematic in crowded frequency bands where multiple signals compete for space.The introduction of vestigial sideband modulation (VSB) addresses this challenge. VSB modulation retains one full sideband while only partially transmitting the other. By doing so, it effectively reduces the bandwidth required for transmission without significantly compromising the quality of the received signal. This technique is especially useful in television broadcasting, where bandwidth is at a premium. The ability to carry high-quality video signals over limited bandwidth has made VSB a standard practice in the industry.Moreover, the use of vestigial sideband modulation has implications beyond television. It is also applied in data communications and radio broadcasting. For instance, in digital television, VSB allows for the efficient transmission of high-definition content, ensuring that viewers receive clear images without excessive interference. This efficiency is crucial as more channels and higher quality content are demanded by consumers.In addition to its practical applications, the concept of vestigial sideband also serves as a fascinating example of how technological advancement often leads to innovative solutions. Engineers and researchers continually seek ways to improve communication systems, and the development of VSB is a testament to their ingenuity. By understanding the principles behind vestigial sideband modulation, we gain insight into the complex world of signal processing and the ongoing evolution of telecommunications.In conclusion, the term vestigial sideband (余留边带) encapsulates a critical aspect of modern communication technology. Its application in amplitude modulation not only enhances the efficiency of signal transmission but also exemplifies the innovative spirit of the field. As we continue to advance technologically, the importance of concepts like VSB will only grow, paving the way for even more efficient and effective communication solutions in the future.