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Table 2 Compression ratio (Eq. (36)) comparison

From: Improving sign-algorithm convergence rate using natural gradient for lossless audio compression

Category

Codec

 

FLAC

WavPack

TTA

MPEG4-ALS

Monkey’s

NARU

Classical

44.22

43.91

43.96

43.67

41.28

43.30

Music genre

58.43

57.64

58.20

58.17

56.21

57.69

Jazz

48.12

47.43

47.64

47.51

45.51

47.27

Popular music

67.91

67.18

67.72

67.70

65.71

67.54

Royalty-free

61.03

60.47

61.00

60.82

58.59

60.25

Total

56.76

56.10

56.49

56.39

54.32

56.07