吉林大学学报（信息科学版）2011，Vol.29Issue(1)：1-6,6.
模式匹配和过零率检测的音频差错掩盖
Audio Error Concealment Based on Pattern Matching and Zero-Crossing Detection
摘要
Abstract
The traditional waveform substitution techniques for recovering missing audio segments can not accurately reconstruct the trend of the audio waveform. The theory and the algorithm of pattern matching and shorttime zero-crossing are applied to the research of the audio error concealment method. When frames of the audio are lost, the audio signal data is sent into the module of pattern matching. After the procedure of pattern matching, the audio signals with data and reference information are processed in the module of short-time zero-crossing. So it is synthesized as the reference frame to substitute the lost frame in order to reconstruct the original audio signal. Compared with the traditional audio signal waveform reconstruction, this proposed method is better for audio frame reconstruction. The experimental results show that the average SNR ( Signd-to-Noise ) of the reconstructed audio is increased by 0. 3-0. 5 dB and the average PESQ ( Perceptual Estimation of Speech Quality ) of the reconstructed audio is increased by 0. 3.关键词
音频/差错掩盖/模式匹配/短时过零率分类
信息技术与安全科学引用本文复制引用
肖菲,陈贺新,许万里,赵岩..模式匹配和过零率检测的音频差错掩盖[J].吉林大学学报（信息科学版）,2011,29(1):1-6,6.基金项目
国家自然科学基金资助项目(60872072,60832002) （60872072,60832002）
国家自然科学基金国际合作基金资助项目(60911130128) （60911130128）
吉林大学杰出青年基金资助项目(200905018) （200905018）
