group delay distortion

简明释义

群时延失真

英英释义

例句

1.In high-speed data transmission, group delay distortion can lead to signal degradation.

在高速数据传输中，群延迟失真可能导致信号退化。

2.Engineers are developing new algorithms to reduce group delay distortion in communication systems.

工程师们正在开发新算法，以减少通信系统中的群延迟失真。

3.The research focused on how group delay distortion impacts the performance of optical fibers.

研究集中在群延迟失真如何影响光纤性能。

4.To minimize group delay distortion, we adjusted the equalizer settings on the mixing console.

为了最小化群延迟失真，我们调整了混音台上的均衡器设置。

5.The audio engineer noticed that the speaker system had significant group delay distortion, which affected the clarity of the sound.

音频工程师注意到扬声器系统存在显著的群延迟失真，这影响了声音的清晰度。

作文

Group delay distortion is a critical concept in the field of signal processing and telecommunications. It refers to the variation in group delay across different frequencies in a signal. Essentially, while transmitting a signal, various frequency components can arrive at the destination at different times due to the characteristics of the transmission medium. This phenomenon can lead to a distortion of the original signal, which can significantly impact the quality of the received information.In telecommunications, maintaining the integrity of a signal is paramount. When signals are transmitted over long distances, they often encounter various obstacles and mediums that can alter their properties. One of the primary concerns engineers face is ensuring that all frequency components of a signal are delayed uniformly. If certain frequency components experience a longer delay than others, it results in group delay distortion (群延迟失真). This distortion can cause issues such as signal smearing, where the clarity and sharpness of the original signal are lost, making it difficult for receivers to accurately interpret the information.The impact of group delay distortion is particularly evident in audio and video signals. For instance, in audio applications, if different frequencies of a sound wave reach the listener's ears at different times, it can create a phenomenon known as phase distortion. This distortion can alter the perceived quality of sound, leading to a muddy or unclear audio experience. Similarly, in video applications, group delay distortion can result in visual artifacts that detract from the viewing experience.To combat group delay distortion, engineers employ various techniques during the design and implementation of communication systems. One common approach is to use equalization methods that adjust the amplitude and phase of different frequency components to ensure they align more closely in time. Additionally, advanced filtering techniques can be utilized to minimize the effects of group delay distortion by selectively allowing certain frequencies to pass while attenuating others that may cause distortion.Another important aspect of managing group delay distortion is the careful selection of transmission media. Fiber optics, for example, can provide a more uniform group delay across a wide range of frequencies compared to traditional copper cables. This advantage makes fiber optics a popular choice for high-speed data transmission, where maintaining signal integrity is crucial.In conclusion, understanding group delay distortion is essential for engineers and professionals in the fields of telecommunications and signal processing. By recognizing the potential impacts of this distortion and implementing strategies to mitigate it, we can improve the quality of transmitted signals and enhance the overall user experience. As technology continues to advance, the importance of minimizing group delay distortion will only grow, necessitating ongoing research and innovation in the field.

群延迟失真是信号处理和电信领域的一个关键概念。它指的是信号中不同频率之间的群延迟变化。本质上，在传输信号时，由于传输介质的特性，各个频率成分可能在到达目的地时出现不同的时间。这种现象可能导致原始信号的失真，从而显著影响接收信息的质量。在电信中，保持信号的完整性至关重要。当信号通过长距离传输时，它们常常会遇到各种障碍和介质，这些都可能改变它们的特性。工程师面临的主要问题之一是确保信号的所有频率成分均匀延迟。如果某些频率成分的延迟时间比其他成分更长，就会导致群延迟失真。这种失真可能导致信号模糊，原始信号的清晰度和锐利度丧失，使接收者难以准确解读信息。群延迟失真的影响在音频和视频信号中尤为明显。例如，在音频应用中，如果声波的不同频率在到达听者耳朵时的时间不同，就会产生称为相位失真的现象。这种失真可能改变声音的感知质量，导致音频体验模糊或不清晰。同样，在视频应用中，群延迟失真可能导致视觉伪影，影响观看体验。为了应对群延迟失真，工程师在通信系统的设计和实施过程中采用各种技术。一种常见的方法是使用均衡化方法，调整不同频率成分的幅度和相位，以确保它们在时间上更紧密地对齐。此外，可以利用先进的滤波技术，通过选择性地允许某些频率通过，同时衰减可能导致失真的其他频率，来最小化群延迟失真的影响。管理群延迟失真的另一个重要方面是仔细选择传输介质。例如，与传统的铜缆相比，光纤可以在广泛的频率范围内提供更均匀的群延迟。这一优势使光纤成为高速数据传输的热门选择，在这种情况下，保持信号的完整性至关重要。总之，理解群延迟失真对于电信和信号处理领域的工程师和专业人士至关重要。通过认识到这种失真的潜在影响并实施缓解策略，我们可以改善传输信号的质量，增强整体用户体验。随着技术的不断进步，最小化群延迟失真的重要性只会增加，这需要在该领域持续的研究和创新。