Results Overview

 

4-class rates (chance=25%)

 

Intervals

 

S1

S2*

S3

S4

Mean

Max

Raw

59.2

57.7

56.8

66.2

59.975

66.2

ICA

72.6

67.9

62.7

69.8

68.25

72.6

ICA Clean

73.3

68.7

60.1

70.3

68.1

73.3

 

Melody

 

S1

S2

S3

S4*

Mean

Max

Raw

53.7

56

44.1

61.6

53.85

61.6

ICA

56.3

47.4

49.1

74.9

56.925

74.9

ICA Clean

56.1

48

48.5

76.2

57.2

76.2

* Same subject.

 

Note that the subject who participated in both experiments achieved similar rates on both; thus the overall difference in rates may have more to do with the subject pool than with the stimuli.

 

Pair rates – ICA clean only (chance=50%)

 

Intervals

 

Varied Dimensions

S1

S2*

S3

S4

Mean

Max

1 vs 2

Interval, timbre, register, loudness

96.5

97.5

89.5

93

94.125

97.5

2 vs 4

Register, loudness

95.5

97.5

85.2

91

92.3

97.5

2 vs 3

Interval, timbre

94.5

94.2

83.2

94

91.475

94.5

4 vs 1

Interval, timbre

87.5

76.7

77.3

85.2

81.675

87.5

1 vs 3

Register, loudness

77.8

72.7

71.5

84.7

76.675

84.7

3 vs 4

Interval, timbre, register, loudness

68.3

69.2

63.2

70.3

67.75

70.3

 

 

Melody

 

Varied Dimensions

S1

S2

S3

S4*

Mean

Max

1 vs 2

Interval, timbre, register, loudness

84.5

77.8

78.2

96

84.125

96

2 vs 4

Register, loudness

71.5

72.8

75.2

91.7

77.8

91.7

2 vs 3

Interval, timbre

71.8

70.2

74.3

86.5

75.7

86.5

4 vs 1

Interval, timbre

78

72.2

66.7

93.2

77.525

93.2

1 vs 3

Register, loudness

74

61.2

59.5

82.3

69.25

82.3

3 vs 4

Interval, timbre, register, loudness

61

63.8

59.8

75

64.9

75

 

Note that the bottom-most pair rate (3 vs 4) for both experiments is worse than the 4-class rate for the intervals experiment.

 

4-class and Pair Rates by Subject (raw, ICA, and ICA clean)

Intervals S1                                       Melody S1

Intervals S2                                       Melody S2

Intervals S3                                       Melody S3

Intervals S4                                       Melody S4

 

Confusion Matrix for 4-class

 

Intervals (averaged ICA clean)

 

Stim 1

Stim 2

Stim 3

Stim 4

Stim 1

204.75

8.5

50.5

36.25

Stim 2

7

269.25

10.75

13

Stim 3

53.75

15.5

161.25

69.5

Stim 4

29.5

15.75

72.75

182

 

Melody S4 [for better comparison to Intervals rates]

ICA clean

 

Stim 1

Stim 2

Stim 3

Stim 4

Stim 1

248

2

40

10

Stim 2

5

263

20

12

Stim 3

43

19

182

56

Stim 4

4

9

66

221

 

Note the considerable confusion between 3 and 4 (as in the pair rates).  There is also some confusion between stimuli 1 and 3, which share interval (or melody), as well as the plucked-string timbre.

 

Conditional Probability Matrix for 4-class

 

Intervals (averaged ICA clean)

 

Stim 1

Stim 2

Stim 3

Stim 4

Stim 1

0.6825

0.02833

0.16833

0.1208

Stim 2

0.02333

0.8975

0.03583

0.0433

Stim 3

0.1792

0.05167

0.5375

0.2317

Stim 4

0.09833

0.0525

0.2425

0.6067

 

Melody S4 [for better comparison to Intervals rates]

ICA clean

 

Stim 1

Stim 2

Stim 3

Stim 4

Stim 1

0.8267

0.0067

0.1333

0.0333

Stim 2

0.0167

0.8767

0.0667

0.04

Stim 3

0.1433

0.0633

0.6067

0.1867

Stim 4

0.0133

0.03

0.22

0.7367

 

Confusion and Conditional Probability Matrices by Subject

Intervals S1                                       Melody S1

Intervals S2                                       Melody S2

Intervals S3                                       Melody S3

Intervals S4                                       Melody S4

 

ICA Source Classification Rates (4-class)

Upon brief inspection, the ICA sources that perform well on the classification tend to be located around the frontal lobe.

 

Since ICA sources vary from subject to subject, source rates will not be averaged.  However, ICA source maps (with top 5 source rates listed) may be viewed for each subject:

 

Intervals S1                                       Melody S1

Intervals S2                                       Melody S2

Intervals S3                                       Melody S3

Intervals S4                                       Melody S4

 

Additionally, detailed source-by-source ICA rates (ICA clean data) are available:

 

Intervals S1                                       Melody S1

Intervals S2                                       Melody S2

Intervals S3                                       Melody S3

Intervals S4                                       Melody S4

 

 

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