A new Wiener filtering based detection scheme for time domain perceptual audio watermarking

The paper presents a new detection method for a spread spectrum and perceptual watermarking system, viewed as a hidden data transmission system, where the generic detection operation is achieved by a Wiener deconvolution filter. We point out the insufficiencies of the generic reception scheme concerning truncation errors and an ill-conditioned deconvolution operation, and we propose a cascade realization of the reception filter, which significantly improves the detection performances (to a multiplicative factor of 20) at higher bit rates, even in the presence of MPEG compression.