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Table 2.

Mixed-effects Model Factors (Fixed Effects)

VariableExperiments involvedTypeDescription
Random Intercept E1, E2, E3 Factor Factor to account for within-subject individual differences 
Segregation Blend E1, E3 DVs Rated degree of segregation or blend of each excerpt (0-1) 
E2 
Timbral Class  E1, E2, E3 Within-subject factor Within- (0) or between-family (1) timbral combinations 
Reorchestration E3 Between-subjects factors Original orchestration (0) or reorchestration (1) 
Training E1, E2, E3 Nonmusician (0) or Musician (1) 
Spectral Centroid Frame Energy Spectral Crest Spectral Flatness Spectral Skewness Spectral Variation E1 Acoustic factors Average difference in spectral centroid Average difference in frame energy Average difference in spectral crest Average difference in spectral flatness Average difference in spectral skewness Average difference in spectral variation  
E1, E3 
E1, E3 
E1, E2 
E1, E2 
E1, E2, E3 
Average Interval Crossing Proportion Onset Synchrony Consonance E1, E3 Score-based factors Average difference in pitch Proportion of note crossings Proportion of synchronous onsets Degree of consonance in harmonic intervals  
E1, E2, E3 
E1, E2, E3 
E2 
VariableExperiments involvedTypeDescription
Random Intercept E1, E2, E3 Factor Factor to account for within-subject individual differences 
Segregation Blend E1, E3 DVs Rated degree of segregation or blend of each excerpt (0-1) 
E2 
Timbral Class  E1, E2, E3 Within-subject factor Within- (0) or between-family (1) timbral combinations 
Reorchestration E3 Between-subjects factors Original orchestration (0) or reorchestration (1) 
Training E1, E2, E3 Nonmusician (0) or Musician (1) 
Spectral Centroid Frame Energy Spectral Crest Spectral Flatness Spectral Skewness Spectral Variation E1 Acoustic factors Average difference in spectral centroid Average difference in frame energy Average difference in spectral crest Average difference in spectral flatness Average difference in spectral skewness Average difference in spectral variation  
E1, E3 
E1, E3 
E1, E2 
E1, E2 
E1, E2, E3 
Average Interval Crossing Proportion Onset Synchrony Consonance E1, E3 Score-based factors Average difference in pitch Proportion of note crossings Proportion of synchronous onsets Degree of consonance in harmonic intervals  
E1, E2, E3 
E1, E2, E3 
E2 

Note: Difference measures for acoustic and score-based factors were calculated between two streams in Experiments 1 and 3 and between each instrument pair in Experiment 2. For details, see Appendices B and C.

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