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Introduction2 humming
1.
山东大学 软件学院
2.
山东大学 软件学院
3.
山东大学 软件学院
4.
山东大学 软件学院 现状 最简单的——将完整的音频文件进行直接的数字 波形比对 准确率低!!! 改进版——可通过MD5和CRC算法,将数据转 换成紧凑的表示形式 结果对数据过于敏感, 鲁棒性较差!! Gracenote Mobile
5.
音频指纹 :
能够代表一段音乐重要特征的 基于内容的紧致数字签名 现状 音频指纹 时域特征 频域 特征 时频特 征 山东大学 软件学院
6.
前端处理和建模 现状 音频指纹 预处理 分帧和重叠 转换 特征提取 后处理 指纹模型化 输入 •
音频信号 采样 AD处理 单声道转换 预加重 带通滤波 能量 音调 节拍 纠错码、矢量量化、量化直方图 山东大学 软件学院
7.
前端处理和建模 现状 音频指纹 山东大学
软件学院
8.
音乐集 指纹提取 数据库 元数据 指纹提取 比对 未知音乐
音乐ID, 元数据 音乐集 指纹提取 数据库 元数据 指纹提取 比对 未知音乐 音乐ID, 元数据 现状 音频指纹 处理流程 山东大学 软件学院
9.
界面简洁明了,方便操作 数据库中获取了DoubanFM的大量歌曲,提 高了辨析准确性
利用用户的检索历史分析用户喜好。推荐 歌曲 现状 音频指纹 使用、特 色 山东大学 软件学院
10.
山东大学 软件学院
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