Digital audio watermarking is nowadays gaining popularity among the original audio content producers. It provides a way to the owner to prove ownership by using watermark which forms integral part of audio. An approach is made in this paper to collectively introduce applications and techniques up till developed for audio watermarking.The proposedalgorithm is based on wavelet transform which has efficient computational load and also on cosine transform for increasing the watermark embedding capacity. Keywords: Watermark, audio, DFT, DCT, DWT, and DSSS.

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