音場における残響時間の主観的プリファレンスと大脳半球上α波の自己相関関数と関連性について

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  • ON THE RELATIONSHIP BETWEEN THE AUTOCORRELATION FUNCTION OF THE α-WAVES ON THE LEFT AND RIGHT HEMISPHERES AND SUBJECTIVE PREFERENCE FOR THE REVERBERATION TIME OF MUSIC SOUND FIELD
  • On the Relationship between the Autocor

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The purpose of this investigation is to examine the relatioship between a-waves range of the continuous brain waves (CBW) for 10 subjects and the scale value (SV) of the subjective preference for the reverberation time (T_<sub>). The most pieferred T_<sub> of the 10 subjects was centered on 1.2 s for the music piece used. Accordingly, we represented 1.2 s of the T_<sub> signal for comparison with the two less preferred, 0.2 s and 6.4 s in running pairs for recording CBW, respectively. Then, the effective duration (τ_e) of the autocorrelation function of the α-wave was analyzed. The values of τ_e form the left hemisphere of the subjects all over show a significant agreement with the SV of the T_<sub> on the (0.2 and 1.2 s) pair with few individual differences. It is remarkable that the individual preferences for 6.4 s in comparison to that for 1.2 s correlate well with the individual ratios of the τ_e of 1.2 s to the τ_e of 6.4 s also in the left hemisphere.

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