基于提升小波变换对音乐信号压缩的研究

Research of Music Signal Compression Based on Lifting Wavelet Transform

用提升方法构造传统小波,并将构造后的提升小波用于音乐信号压缩中。对一段音乐信号通过提升小波分解,并分别基于提升格式下的haar,dbN,symN小波对音乐信号进行压缩。观察仿真结果,对比基于提升小波进行压缩后的效果,得出压缩的较佳方案。再通过小波变换对音乐信号的压缩,得出基于提升小波变换的优点。

The traditional wavelet is constructed with lifting method, and the constructed lifting wavelet is used to music signal compression. A music signal is decomposed by lifting wavelet, and compressed respectively based on haar, dbN and symN wavelet under lifting format. Simulation results are observed, the effect based on lifting wavelet compression is compared, and better compression scheme is achieved. The advantage of lifting wavelet transform is obtained by wavelet compression of music signals.