This section presents a graphical representation of the binomial test data which is provided in full in Appendix Sections B.2, B.3 and B.4. Results of the preference section are divided into overall and piece by piece results and are presented in Section 6.1. Attribute results are presented on a piece by piece basis in Section 6.2.
All tests were carried out to a confidence level of 95% and where appropriate, 99%. Results which reject the null hypothesis at the 95% confidence level will be described with the respect to their ‘significance’ or as ‘significant’. Results which reject the null hypothesis at 99% will be described with respect to their ‘high significance’ or as ‘highly significant’ (Sprent, 1989, p. 22).
6.1 Preference
6.1.1 Overall
Overall preference results for all test stimuli, across both types of musical pieces are presented. In order to be considered significant, a result of at least 51 votes is required. Results of 54 or more will be considered highly significant.
Figure 6.1 – Overall Preference
6.1.2 Piece 1 and Piece 2
Preference results for each piece of music are presented for comparison against each other. In order to be considered significant, a result of at least 28 votes is required. Results of 30 or more will be considered highly significant.
Figure 6.2 – Piece 1 Preference
Figure 6.3 – Piece 2 Preferences
6.2 Attributes
Attribute results for each piece of music are presented for each pairwise comparison of recording extracts, MMA vs. SFI, MMA vs. SFA and SFI vs. SFA. In order to be considered significant, a result of at 28 or more votes is required where a result of 30 or more will be considered highly significant. For reference, appropriate preference results are also provided.
6.2.1 Multi Microphone Array vs. Soundfield ITU
Results of the comparison between the Multi Microphone Array and Soundfield array in ITU specification for each musical piece are presented.
Figure 6.4 – MMA vs. SFI Piece 1
Figure 6.5 – MMA vs. SFI Piece 1
6.2.2 Multi Microphone Array vs. Soundfield SFA
Results of the comparison between the Multi Microphone Array and Soundfield array in the adjusted specification for each musical piece are presented.
Figure 6.6 – MMA vs. SFA Piece 1
Figure 6.7 – MMA vs. SFA Piece 2
6.2.3 Soundfield ITU vs. Soundfield SFA
Results of the comparison between the Soundfield array in ITU specification and Soundfield in the adjusted specification for each musical piece are presented.
Figure 6.8 – SFI vs. SFA Piece 1
Figure 6.9 – SFI vs. SFA Piece 2
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