Mr. Daisuke Inoue Profile

Daisuke Inoue

at Yokohama National Univ

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Proceedings Article | 29 April 2002 Paper

Scheme of standard MIDI files steganography and its evaluation

Daisuke Inoue, Tsutomu Matsumoto

Proceedings Volume 4675, (2002) https://doi.org/10.1117/12.465276

KEYWORDS: Single mode fibers, Steganography, Data hiding, Data storage, Computing systems, Internet, Human-machine interfaces, Standards development, Electronics, Manufacturing

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Steganography aims to make communication invisible by hiding genuine information in innocent objects. We have proposed the SMF steganography that enables to hide information into Standard MIDI Files (SMF). The SMF is widely used as a standard storage format of the data of Musical Instrumental Digital Interface (MIDI). Most of digital musical instruments and personal computers equip the MIDI. Our hiding method utilizes a redundancy of the description of note events (note on/off) in SMF. Some note events, which are performed simultaneously, are allowed as correct contents of SMF even if they are described in any order. Therefore, we can permute the order of such note events according to the embedded data without changing their sounds. To clarify the potential of the SMF steganography, we calculate the embeddable data size about over three hundred SMFs that are opened to the public on the Internet. As a result, the embedding rate, which is the percentage of embeddable data size to cover SMF size, shows about 1% on average, and the best case reaches about 4%. We also clarify the influence of the Quantize function (which adjusts the timing of note events) on the embeddable data size.

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