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Table 1 Comparison of the sparsity levels

From: An efficient solution to sparse linear prediction analysis of speech

Method kurtosis on the whole sentence kurtosis onvoiced parts
l2-norm minimization 51.7 39.7
l1-norm minimization 81.9 65.9
weighted-l2-norm minimization 86.6 69.7
  1. Quantitative comparison of the level of sparsity of different LP analysis strategies.