Many audio test samples were utilized to test the performance behavior the used samples have various sizes and vary in features. The measures Peak signal-to-noise ratio (PSNR) and compression ratio (CR) were used to conduct a comparative analysis for the performance of the whole system. In this paper, an efficient audio compressive scheme is proposed, it depends on combined transform coding scheme it is consist of i) bi-orthogonal (tab 9/7) wavelet transform to decompose the audio signal into low & multi high sub-bands, ii) then the produced sub-bands passed through DCT to de-correlate the signal, iii) the product of the combined transform stage is passed through progressive hierarchical quantization, then traditional run-length encoding (RLE), iv) and finally LZW coding to generate the output mate bitstream. Span>Digital audio is required to transmit large sizes of audio information through the most common communication systems in turn this leads to more challenges in both storage and archieving.
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