Audio data hiding by use of band-limited random sequences

Authors:
M. Ikeda;K. Takeda;F. Itakura
Affiliations:
Graduate Sch. of Eng., Nagoya Univ., Japan;-;-
Venue:
ICASSP '99 Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 04
Year:
1999

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Abstract

This paper proposes the use of band-limited random sequences to introduce further flexibility in the spread spectrum based audio data hiding. To realize the sub-band data hiding, a systematic method is developed in order to generate band-limited and orthonormal random sequences of any length. In experiments, we evaluated the selective use of frequency channels to be used for information embedding, and the robustness against the MPEG1 layer 3 encoding and decoding. From the results, it is clarified that the proposed method is robust against more than 160 kbps MPEG1 coding and decoding when the center frequency of the sub-band is lower than 11 kHz.