摘要
随着数字化时代的到来，音频信号在多媒体、通信、娱乐及专业音频制作等领域的应用日益广泛。音频质量成为用户体验的关键因素之一，而音频信号在采集、处理、传输、存储及播放等各个环节中均可能遭受不同程度的失真。失真不仅影响音频的清晰度、透明度和层次感，还可能引入杂音和不必要的频率成分，严重降低音频信号的整体质量。因此，本文旨在探讨音频信号处理中的失真问题及其修复技术。首先，概述了音频信号处理的基础知识和失真类型，包括电失真、声失真、线性失真和非线性失真等，并介绍了音频信号失真的评价标准。随后，详细分析了音频信号在传输、存储及播放过程中可能遇到的失真问题，如信道噪声、信号衰减、存储介质老化等。针对这些问题，本文综述了多种有效的修复对策和技术，包括噪声抑制与滤波技术、高分辨率重采样与重构技术、信号传输与存储失真修复技术，以及音频播放设备失真修复技术等。通过这些技术的综合应用，可以有效减少音频信号在各个处理环节中的失真，提高音频信号的整体质量。本文的研究对于推动音频信号处理技术的发展，提升音频应用的质量水平具有积极的推动作用。
关键词：音频信号处理；失真问题；修复技术；音质优化
Abstract
With the advent of the digital age, audio signals are increasingly widely used in the fields of multimedia, communication, entertainment and professional audio production. Audio quality has become one of the key factors in the user experience, and audio signals may suffer from varying degrees of distortion in the acquisition, processing, transmission, storage and playback. Distortion not only affects the clarity, transparency and hierarchy of the audio, but may also introduce noise and unnecessary frequency components, seriously reducing the overall quality of the audio signal. Therefore, this paper aims to explore the distortion problem in audio signal processing and its repair techniques. First, the basic knowledge and distortion types of audio signal processing, including electrical, acoustic, linear and nonlinear distortion, are summarized, and the evaluation criteria of audio signal distortion are introduced. Then, the possible distortion problems in audio signal transmission, storage and playback, such as channel noise, signal attenuation, and storage medium aging, are analyzed in detail. In view of these problems, this paper summarizes a variety of effective repair countermeasures and techniques, including noise suppression and filtering technology, high resolution resampling and reconstruction technology, signal transmission and storage distortion repair technology, and audio playback equipment distortion repair technology. Through the comprehensive application of these technologies, the distortion of audio signal in each processing link can be effectively reduced, and the overall quality of audio signal can be improved. The research in this paper plays a positive role in promoting the development of audio signal processing technology and improving the quality level of audio applications.
Keywords： Audio signal processing; Distortion problem; Repair technology; Sound quality optimization
目 录
摘要 I
Abstract II
一、绪论 1
（一）研究背景和意义 1
（二）国内外研究现状 1
二、相关理论概述 2
（一）音频信号处理基础 2
（二）失真类型与评价标准 2
三、音频信号处理中的失真问题 3
（一）音频信号的失真问题 3
（二）信号传输中的失真问题 3
（三）信号存储中的失真问题 4
（四）音频播放设备的失真问题 5
四、音频信号失真的修复对策 6
（一）音频信号失真修复技术 6
（二）信号传输失真修复技术 6
（三）信号存储失真修复技术 7
（四）音频播放设备失真修复技术 8
结 论 9
参考文献 10
随着数字化时代的到来，音频信号在多媒体、通信、娱乐及专业音频制作等领域的应用日益广泛。音频质量成为用户体验的关键因素之一，而音频信号在采集、处理、传输、存储及播放等各个环节中均可能遭受不同程度的失真。失真不仅影响音频的清晰度、透明度和层次感，还可能引入杂音和不必要的频率成分，严重降低音频信号的整体质量。因此，本文旨在探讨音频信号处理中的失真问题及其修复技术。首先，概述了音频信号处理的基础知识和失真类型，包括电失真、声失真、线性失真和非线性失真等，并介绍了音频信号失真的评价标准。随后，详细分析了音频信号在传输、存储及播放过程中可能遇到的失真问题，如信道噪声、信号衰减、存储介质老化等。针对这些问题，本文综述了多种有效的修复对策和技术，包括噪声抑制与滤波技术、高分辨率重采样与重构技术、信号传输与存储失真修复技术，以及音频播放设备失真修复技术等。通过这些技术的综合应用，可以有效减少音频信号在各个处理环节中的失真，提高音频信号的整体质量。本文的研究对于推动音频信号处理技术的发展，提升音频应用的质量水平具有积极的推动作用。
关键词：音频信号处理；失真问题；修复技术；音质优化
Abstract
With the advent of the digital age, audio signals are increasingly widely used in the fields of multimedia, communication, entertainment and professional audio production. Audio quality has become one of the key factors in the user experience, and audio signals may suffer from varying degrees of distortion in the acquisition, processing, transmission, storage and playback. Distortion not only affects the clarity, transparency and hierarchy of the audio, but may also introduce noise and unnecessary frequency components, seriously reducing the overall quality of the audio signal. Therefore, this paper aims to explore the distortion problem in audio signal processing and its repair techniques. First, the basic knowledge and distortion types of audio signal processing, including electrical, acoustic, linear and nonlinear distortion, are summarized, and the evaluation criteria of audio signal distortion are introduced. Then, the possible distortion problems in audio signal transmission, storage and playback, such as channel noise, signal attenuation, and storage medium aging, are analyzed in detail. In view of these problems, this paper summarizes a variety of effective repair countermeasures and techniques, including noise suppression and filtering technology, high resolution resampling and reconstruction technology, signal transmission and storage distortion repair technology, and audio playback equipment distortion repair technology. Through the comprehensive application of these technologies, the distortion of audio signal in each processing link can be effectively reduced, and the overall quality of audio signal can be improved. The research in this paper plays a positive role in promoting the development of audio signal processing technology and improving the quality level of audio applications.
Keywords： Audio signal processing; Distortion problem; Repair technology; Sound quality optimization
目 录
摘要 I
Abstract II
一、绪论 1
（一）研究背景和意义 1
（二）国内外研究现状 1
二、相关理论概述 2
（一）音频信号处理基础 2
（二）失真类型与评价标准 2
三、音频信号处理中的失真问题 3
（一）音频信号的失真问题 3
（二）信号传输中的失真问题 3
（三）信号存储中的失真问题 4
（四）音频播放设备的失真问题 5
四、音频信号失真的修复对策 6
（一）音频信号失真修复技术 6
（二）信号传输失真修复技术 6
（三）信号存储失真修复技术 7
（四）音频播放设备失真修复技术 8
结 论 9
参考文献 10
