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An Investigation of the Relationship between Listener Envelopment and Room Acoustic Parameters—The Influence of Varied Direct Sound Levels and Onset Times of Late Reverberation on Listener Envelopment

It is proposed that the late reflection energy from 80 ms after the direct sound contributes to listener envelopment (LEV). According to previous research, 80 ms is not necessarily the most suitable onset-time of late reverberation for predicting LEV. In addition to this, LEV tends to increase if C80 decreases. However, it is possible for LEV to be low for very low early energy with relatively higher late energy. In this study the LEV for stimuli of varied direct sound levels and onset-times of late reverberation was investigated. As a result, it is suggested that as the direct sound level increases, the LEV increases. Additionally, we confirmed that LEV increased as C10 increased.

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