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论文题目  音频时域修正研究 
论文题目(英文)  
作者 黄玫 
发表年度 2008 
29 
3 
页码 680 
期刊名称 计算机工程与设计 
摘要 传统的音频时域修正采用 SOLA 方法, 但不适宜处理音频信号中广泛存在的瞬时冲击,存在一定局限性,基于此方法提出了一种改进的 SOLA 算法, 有效地改进了传统算法; 或者采用基于正弦模型的时域修正方法, 灵活地将不同类型的信号进行不同处理, 较好地保留了瞬时冲击特性; 仿真实验的结果证明, 两种方法均能解决传统 SOLA 算法中瞬时冲击处理不当的问题,同时两种方法各有利弊。
关键词: 瞬时冲击; 正弦; 音频; 信号模型; 时域修正 
摘要_英文 The conventional audio time scale modification adopts SOLA (synchronized overlap and add) method, but it has its limitations
in that it does not suitable for transients which widely exist in audio signal. Based on this conventional method, a new SOLA algorithm is introduced, which greatly improves conventional method; or adopt time scale method based on sinusoidal model, which flexibly uses different time scale methods according to different type of signals, hence maintains the property of transients well. The simulation experimental results indicate: both of these two methods can solves the problem of inappropriate transient procession in SOLA method,which respectively have their own advantages.
Key words:SOLA; transient; sinusoidal; audio; signal model; time scale