Reverberation time variation is given from 0-2 S with a step of 250 mS Delay time variation is given from 20-60 mS with a step of 10 mS. The delay time and reverberation time of the stimuli was varied using computer software. Physio-Acoustics study is done with EEG and has a purpose to see objective response from brain because of external stimulus which is angklung music. The value of τe are depended on how many angklung instruments are played at the same time and how the player play this instruments. With autocorrelation method we find the value of τe from angklung music is between 12-20 mili second, reverberation time (Tsub) is between 276-460 mili second and initial time delay (∆t1) is between 12-20 mili second. more This research tries to find optimum delay time with autocorrelation method and physio-acoustics method from angklung music. This research tries to find optimum delay time with autocorrelation method and physio-acoustics m.
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