Title :
Data concealment in audio using a nonlinear frequency distribution of PRBS coded data and frequency-domain LSB insertion
Author :
Cedric, Tio M M ; Adi, R.W. ; Mcloughlin, Adi Ian
Author_Institution :
Sch. of Comput. Eng., Nanyang Technol. Inst., Singapore
Abstract :
A novel method of transparent data concealment in audio-streams is discussed. The proposed system makes use of sub-band coding, least significant bit coding (LSB) and a pseudo-random bit stream generator (PRBS). A maximum of about 6% of the audio file can be used to hide data transparently with no perceptible distortion. A solution to solve the positive bias problem that is inherent in LSB encoding is also presented
Keywords :
audio coding; data encapsulation; frequency-domain analysis; LSB; LSB encoding; PRBS coded data; audio file; audio-streams; frequency-domain LSB insertion; least significant bit coding; nonlinear frequency distribution; positive bias problem; pseudo-random bit stream generator; sub-band coding; transparent data concealment; Acoustic noise; Data encapsulation; Decoding; Encoding; Filter bank; Frequency; Nonlinear distortion; Shift registers; Signal analysis; Streaming media;
Conference_Titel :
TENCON 2000. Proceedings
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-6355-8
DOI :
10.1109/TENCON.2000.893586
