A feature independent of bit rate for twinvq audio retrieval
A feature independent of bit rate for twinvq audio retrieval
复制标题
与 twinvq 音频检索比特率无关的功能
DOI：
10.1109/icme.2001.1237714
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Tadashi Ohmori
中科院分区：
文献类型：
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作者：
Kensuke Onishi;M. Kobayakawa;M. Hoshi;Tadashi Ohmori
本文提出了一种用于TwinVQ音频检索的音频特征。为了构建有效的音频数据库，我们考虑在一个平台上处理这两种技术（压缩和特征提取）。所提出的音频特性满足以下要求：1)独立于比特率；2)可从压缩数据中提取，无需解码；3)可在TwinVQ框架下计算。我们证明了自相关系数在理论上与比特率无关，并通过实验证实了从CD音频数据计算的特征实际上与比特率无关。
In this paper we propose an audio feature for TwinVQ audio retrieval. For making effective audio database, we consider that these two techniques (compression and feature extraction) are dealt with on one platform. The proposed audio feature satisfies the following requirements: 1) independent of bit rate; 2) extractable from compressed data without decoding; 3) computable in the framework of TwinVQ. We show that the autocorrelation coefficient is theoretically independent of bit rate and confirm experimentally that the feature computed from CD audio data is actually independent of bit rate.