Calculation Analysis on Audio Frequency Compression Based on Wavelet Packet Decomposition

Abstract:

This text have further discussed the audio frequency compression based on wavelet packet decomposition and optimize the choice of optimum wavelet packet and proposed a optimized self-adaptive wavelet packet decomposition and adopted zerotree coding based on psycho-acoustic model, which makes this system have a higher compression ratio than audio signal and can keep good real-time and objective recovery signal to noise ratio. Computer simulation test is made for the calculation proposed with Matlab,and this simulation test has proved the point that is mentioned in this text.

• Periodical: Applied Mechanics and Materials (Volumes 182-183)
• Pages: 2035-2039
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.182-183.2035
• Online since: June 2012
• Authors: Kai Wen Zhang, Yan Ling Zhou, Xiang Gang Hua
• Keywords: Audio Compression, Wavelet Packet Decomposition, Zerotree Coding

References

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DOI: 10.1109/78.258086