Abstract
Previously, it was reported that the most preferred initial time delay gap [Δt1]pand subsequent reverberation time are described by the minimum value of the effective duration (τe)minof the running autocorrelation function (ACF) of music signals (2 T=2·0 s) (Y. ANDO et al. 1989 Journal of Acoustical Society of America86, 644–649). This paper shows whether this result is supported or not by use of the electro-physiological method. Experiments were performed for sound fields changing the initial time delay gapΔt1 of a single reflection with vocal music as a source signal, which has large changes in runningτe . The results at the time interval when (τe)minof the music is observed reveal that the scale value of subjective preference is closely related to the value of τeof the alpha wave obtained from the left heimsphere.
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