Adaptive Variable Degree- Zero-Trees for Re-Encoding of Perceptually Quantized Wavelet Packet Transformed Audio and High-Quality Speech
Figure 9
The performance of the proposed AVDZ algorithm in sorting passes of (a) level 1 and (b) level 2 for an assumed input frame with sub-band ordering of Figure 8(d). The solid and hollow circles represent, respectively, the significant and insignificant coefficients relative to the corresponding thresholds of those levels.
