caa a22 4500 605446857 CHVBK 20210128100129.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s11042-014-2157-1 doi (NATIONALLICENCE)springer-10.1007/s11042-014-2157-1 Reversible data hiding in Standard MIDI Files by adjusting delta time values [Elektronische Daten] [Da-Chun Wu, Ming-Yao Chen] In this paper, an effective method of hiding information in Standard MIDI Files (SMF) is presented. The method simultaneously shifts the binary representations of both the division value and non-zero delta time values in a MIDI file left in order to hide information, and embeds secret information in the bits of the non-zero delta time values produced by the left shifting. The number of left shift bits is in accordance with both the tolerance of beat-changing and the size of the secret information to be embedded. Experimental results show that the proposed method is not only able to embed secret information in Standard MIDI Files without influencing their playing quality, but is also able to recover the original MIDI files without distortion after the hidden data have been extracted. Springer Science+Business Media New York, 2014 Reversible data hiding nationallicence Standard MIDI File nationallicence MIDI nationallicence Delta time nationallicence Steganography nationallicence Wu Da-Chun Department of Computer and Communication Engineering, National Kaohsiung First University of Science and Technology, No. 1, University Rd, Yanchao Dist., 824, Kaohsiung City, Taiwan, Republic of China aut Chen Ming-Yao Institute of Engineering Science and Technology, National Kaohsiung First University of Science and Technology, No. 1, University Rd, Yanchao Dist., 824, Kaohsiung City, Taiwan, Republic of China aut Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/21(2015-11-01), 9827-9844 1380-7501 74:21<9827 2015 74 11042 https://doi.org/10.1007/s11042-014-2157-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11042-014-2157-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wu Da-Chun Department of Computer and Communication Engineering, National Kaohsiung First University of Science and Technology, No. 1, University Rd, Yanchao Dist., 824, Kaohsiung City, Taiwan, Republic of China aut NATIONALLICENCE 700 1- Chen Ming-Yao Institute of Engineering Science and Technology, National Kaohsiung First University of Science and Technology, No. 1, University Rd, Yanchao Dist., 824, Kaohsiung City, Taiwan, Republic of China aut NATIONALLICENCE 773 0- Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/21(2015-11-01), 9827-9844 1380-7501 74:21<9827 2015 74 11042