Audio Data Hiding Using Digital Communication Sequences
Date Issued
2007
Date
2007
Author(s)
Huang, Hsin-Yi
DOI
en-US
Abstract
The whole world has evolved into a 3C (including computer, communication and consumer electronics products) age with booming Internet connectivity. By following progress of the digital age, it is easy for people to distribute and download digital files which have caused serious problem of piracy in media distribution. Therefore, data hiding techniques become important in particular. Digital watermarking scheme is used to protect the intellectual property rights of multimedia and digital fingerprinting is applied to provide an evidence for finding illegal users.
In this paper, we propose an audio data hiding technique which takes several digital communication sequences, including Welch-Costas (W-C) arrays, complete complementary (CC) codes and binary zero correlation zone (ZCZ) sequences, as the steganographic signals. The binary information is embedded into the steganographic signal that is subsequently hidden to the host signal and the watermarked signal is inaudible for human hearing. The method is self-synchronizing and allows us to recover embedded bits with a corresponding matched filter. Furthermore, we use more than one series of the communication sequence to implement the embedding algorithm. This can reduce the error rate below 0.1 errors.
Next, audio and optical cryptographic schemes based on interference property of waves are introduced. Two schemes are also secret sharing schemes in which shares are music or images and are not suspect to human perception. They guarantee perfect privacy as well as high quality. It is stated that using computer is not the only way to decrypt the message. For audio cryptographic scheme, we can play two shares on a stereo system, either players or headphones. For optical cryptographic scheme, the Mach-Zehnder interferometer is used as a decryption machine.
Subjects
音訊資料隱藏
數位浮水印
展頻通訊
通信序列
音訊加密
光學加密
秘密共享
audio data hiding
digital watermarking
spread-spectrum communication
communication sequences
audio cryptography
optical cryptography
secret sharing
Type
thesis
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