A new robust digital audio watermarking against desynchronization attack using DWT and DCT was proposed.Firstly

the origin digital audio was segmented and then each segment was cut into two sections.Secondly

with the spa-tial watermarking technique

synchronization code was embedded into the first section.Finally

the DWT and DCT were performed on the second section

and then the watermark was embedded into the low frequency components by quantiza-tion.Experiment results show that the proposed watermarking scheme is inaudible and robust against various signal processing such as noise adding

re-sampling

re-quantization

random cropping

MPEG audio layer 3（MP3） compression

time-scale modification

frequency-scale modification.