An Optimized Anti-Noise Receiving Method Based on Spreading Spectrum Audio Watermarking System

In spreading spectrum audio watermarking system, the random noise on full-frequency is very common, which greatly affects the receiving efficiency. In this paper, we proposed an optimized receiving method, which is specially used to resist full-frequency domain random noise. For most audio signals, especially voice signals, the energy is mainly concentrated in the middle and low frequency bands, and the energy in high frequency band is less. We take advantage of this feature to optimize the performance of spreading spectrum audio watermarking system. Experimental results show that our optimized receiving method will ultimately improve the decoding performance.

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