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Table 1 Perceptual SNR, sparsity factor in the most "sparsifying" basis (in parentheses) and ratio for the three considered tampering example.

From: Identification of Sparse Audio Tampering Using Distributed Source Coding and Compressive Sensing Techniques

 

[dB]

Sparsity ()

T

20.3

9% (1D-DCT)

0.54

F

11.5

26% (2D-DCT)

0.66

TF

14.5

6% (Haar)

0.54