An Adaptive Sparsity Estimation KSVD Dictionary Construction Method for Compressed Sensing of Transient Signal

Table 2

Average sparsity of speech signals on different sparse bases.

Dictionary	Maximum sparsity	Minimum sparsity	Average sparsity
DCT	182	143	160.2
KSVD	146	122	131
CC-KSVD	136	108	125.6
PDR-KSVD	138	114	127
StOMP-KSVD	130	101	117.8
SAMP-KSVD	159	125	139.7
ASE-KSVD (proposed)	123	97	110.5