Digital audio watermarking based on the modulation of MCLT-coefficients

Audio data hiding techniques have various applications such as audio watermarking and steganography. This article provides a brief description of a new method of digital audio watermarking that has been developed based on a modulated complex lapped transform (MCLT). The new audio watermarking algorithm saves the sound quality of the marked signals. The experimental results show the dependence of the sound quality of the marked audio signal on the parameters of the marking method. Moreover, the results of the experiments show the influence of various attacks on the marked audio signal. Based on conducted experiments, it is concluded that the new method of digital audio watermarking can be used to confirm the authenticity of audio files distributed through the Internet or to confirm the integrity of the transmitted audio files.