A literature survey - various audio watermarking techniques and their challenges

Embedding a digital data into the host signal under perceptual constraints is called audio watermarking. Existing Literature in this field gives vast algorithms providing solutions to the audio watermarking constraints. A survey on different domains such as spatial domain, frequency domain and the hybrid domain of digital audio watermarking has been carried out in this paper. The algorithms that are implemented have been studied and reviewed, the challenges posed in this algorithms and their drawbacks have been presented in the paper. The best possible solution to them have been engrossed as future work in this survey.