phase distortion

简明释义

相位畸变

英英释义

例句

1.To minimize phase distortion 相位失真, we adjusted the equalizer settings on the mixing board.

为了最小化相位失真 phase distortion，我们调整了混音台上的均衡器设置。

2.The design of the speaker aims to reduce phase distortion 相位失真 for a clearer audio experience.

扬声器的设计旨在减少相位失真 phase distortion，以提供更清晰的音频体验。

3.The audio engineer noticed significant phase distortion 相位失真 in the recording, which affected the sound quality.

音频工程师注意到录音中有显著的相位失真 phase distortion，这影响了声音质量。

4.The use of high-quality cables can help prevent phase distortion 相位失真 in audio systems.

使用高质量的电缆可以帮助防止音频系统中的相位失真 phase distortion。

5.During the testing phase, we discovered that phase distortion 相位失真 was causing issues in the signal processing.

在测试阶段，我们发现相位失真 phase distortion导致信号处理出现问题。

作文

In the world of signal processing and telecommunications, the term phase distortion refers to a phenomenon where different frequency components of a signal are delayed by varying amounts of time as they pass through a system. This can lead to significant changes in the waveform of the original signal, affecting its quality and integrity. Understanding phase distortion is crucial for engineers and technicians who design and maintain communication systems, as it can impact everything from audio fidelity to data transmission rates.When a signal is transmitted through a medium, such as a cable or air, it may encounter various obstacles that can alter its properties. These alterations can include changes in amplitude, frequency, and phase. Among these, phase distortion is particularly concerning because it can cause overlapping of signals, making it difficult for receivers to accurately interpret the information being sent. For instance, in audio systems, phase distortion can lead to muddied sound quality, where certain frequencies may be emphasized or diminished inappropriately, resulting in a less enjoyable listening experience.One common scenario where phase distortion occurs is in the use of filters. Filters are designed to allow certain frequencies to pass while attenuating others. However, if not properly designed, these filters can introduce phase distortion, causing delays in specific frequency ranges. This can lead to issues such as ringing effects, where the output signal oscillates after the input has stopped, creating an unnatural sound.To mitigate phase distortion, engineers often employ various techniques. One approach is to use linear phase filters, which are designed to maintain a constant phase relationship across all frequencies. By ensuring that all frequency components of a signal are delayed by the same amount of time, linear phase filters help preserve the original waveform of the signal, resulting in clearer and more accurate sound reproduction.Another method to address phase distortion involves the use of equalization. Equalizers can adjust the amplitude of specific frequency bands, allowing for correction of any unwanted phase shifts introduced by other components in the audio chain. This helps to restore balance to the audio signal and reduce the negative impacts of phase distortion.In digital communications, phase distortion can also affect the performance of modulation schemes. For example, in quadrature amplitude modulation (QAM), the phase of the signal carries important information. If phase distortion occurs during transmission, it can lead to symbol errors, where the receiver misinterprets the transmitted data. To combat this, advanced error correction techniques are often implemented to ensure that the integrity of the data is maintained despite potential distortions.In conclusion, phase distortion is a critical concept in the fields of audio engineering and telecommunications. Its effects can significantly impact the quality and clarity of signals, making it essential for professionals in these industries to understand and manage this phenomenon. By utilizing techniques such as linear phase filtering and equalization, engineers can minimize the detrimental effects of phase distortion and ensure that the signals transmitted and received remain true to their original form. As technology continues to evolve, ongoing research and development in this area will be vital for achieving even higher standards of signal fidelity and performance.

在信号处理和电信的世界中，术语相位失真指的是一种现象，其中信号的不同频率分量在通过系统时以不同的时间延迟。这可能导致原始信号波形的显著变化，影响其质量和完整性。理解相位失真对于设计和维护通信系统的工程师和技术人员至关重要，因为它会影响从音频保真度到数据传输速率的方方面面。当信号通过介质（如电缆或空气）传输时，它可能会遇到各种障碍，这些障碍可以改变其属性。这些改变可以包括幅度、频率和相位的变化。在这些变化中，相位失真尤其令人担忧，因为它可能导致信号重叠，使接收器难以准确解释所发送的信息。例如，在音频系统中，相位失真可能导致声音质量模糊，某些频率可能被不适当地强调或减弱，从而导致听觉体验不佳。相位失真发生的一个常见场景是滤波器的使用。滤波器旨在允许某些频率通过，同时衰减其他频率。然而，如果设计不当，这些滤波器可能会引入相位失真，导致特定频率范围的延迟。这可能导致诸如回响效应等问题，即输出信号在输入停止后振荡，产生不自然的声音。为了减轻相位失真，工程师通常采用各种技术。一种方法是使用线性相位滤波器，这些滤波器旨在保持所有频率之间的相位关系恒定。通过确保信号的所有频率分量以相同的时间延迟，线性相位滤波器有助于保留信号的原始波形，从而实现更清晰和更准确的声音重现。另一种解决相位失真的方法是使用均衡器。均衡器可以调整特定频率带的幅度，从而允许纠正其他音频链中引入的任何不必要的相位偏移。这有助于恢复音频信号的平衡并减少相位失真的负面影响。在数字通信中，相位失真也会影响调制方案的性能。例如，在正交振幅调制（QAM）中，信号的相位携带重要信息。如果在传输过程中发生相位失真，可能导致符号错误，即接收器误解传输的数据。为此，通常会实施先进的错误校正技术，以确保尽管存在潜在的失真，数据的完整性得以保持。总之，相位失真是音频工程和电信领域的重要概念。其影响可能显著影响信号的质量和清晰度，因此这一现象的理解和管理对这些行业的专业人士至关重要。通过利用线性相位滤波和均衡等技术，工程师可以最小化相位失真的有害影响，并确保传输和接收的信号保持真实的原始形式。随着技术的不断发展，该领域的持续研究和开发对于实现更高标准的信号保真度和性能至关重要。