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Title: Progressive audio scrambling in compressed domain
Authors: Yan, W.-Q.
Fu, W.-G.
Kankanhalli, M.S. 
Keywords: Audio scrambling/descrambling
Compressed domain
Discrete wavelet transform
Progressive scrambling
Issue Date: 2008
Citation: Yan, W.-Q., Fu, W.-G., Kankanhalli, M.S. (2008). Progressive audio scrambling in compressed domain. IEEE Transactions on Multimedia 10 (6) : 960-968. ScholarBank@NUS Repository.
Abstract: Audio scrambling can be employed to ensure confidentiality in audio distribution. We first describe scrambling for raw audio using the Discrete Wavelet Transform (DWT) first and then focus on MP3 audio scrambling. We perform scrambling based on a set of keys which allows for a set of audio outputs having different qualities. During descrambling, the number of keys provided and the number of rounds of descrambling performed will decide the audio output quality. We also perform scrambling by using multiple keys on the MP3 audio format. With a subset of keys, we can descramble to obtain a low quality audio. However, we can obtain the original quality audio by using all of the keys. Our experiments show that the proposed algorithms are effective, fast, simple to implement while providing flexible control over the progressive quality of the audio output. The security level provided by the scheme is sufficient for protecting MP3 music content. © 2008 IEEE.
Source Title: IEEE Transactions on Multimedia
ISSN: 15209210
DOI: 10.1109/TMM.2008.2001373
Appears in Collections:Staff Publications

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