File(s) not publicly available
Improving frame-bound-ratio for frames generated by oversampled filter banks
conference contributionposted on 06.12.2017, 00:00 by Li Chai, J Zhang, C Zhang, E Mosca
This paper presents a simple method to improve the frame-bounds-ratio of perfect reconstruction (PR) oversampled filter banks (FBs) by adjusting the gain of each subband filter. For a given analysis PRFB, a finite convex optimization algorithm is presented to redesign the subband gains such that the frame-bounds-ratio of the FB is minimized.The algorithm also provides an effective way to compute the frame bounds. Examples show the effectiveness of the presented method.