基于内容的音频检索:概念和方法

Ｆ过去对视觉媒体的检索，如图象和视频，进行了大量的研究。但是我们注意到音频也是多媒体中的一种典型媒体，是信息的一种常用载体。常规的自理是把数字音频当成非结构化流媒体。然而音频是语音的载体、包含丰富的听觉特征，并且具有结构信息。因此需要并且可以基于这些内容对音频进行存取。本文根据当前相关研究的进展，综述基于内容的音频检索方法，包括面向语音、音乐和音频分析的检索、音频分割等；分析并总结出音频内容及其检

AUDIO RETRIEVAL BASED ON CONTENT: CONCEPT AND APPROACHES

A lot of researches on content based retrieval focus on visual media, but audio also is an important medium and information carrier. Audio is processed by conventional methods as an opaque stream medium, which is not suitable for information retrieval. In fact, audio carries speech, music, and plenty of aural contents, so it can be retrieved based on speech, acoustic features, and musical melodies. This paper reviews the research works and recent advances in audio retrieval, including speech based approach, music retrieval, audio retrieval, segmentation for long audio recording, classification, and presents the concept and architecture of content based audio retrieval. Finally, some promising researching issues are given.