Fall Of The System

This work consisted of different acoustic characteristics using two recording methods and attempted to produce reproducible noise music. It contains 11 tracks, with each of the 5 tracks carrying out binaural and line recordings, except for the 8th track. A binaural recording was played through the synthesizer system with a 24-channel speaker and recorded with the dummy head microphone. The speaker units form a rectangular space of 140 cm in length and 152 cm in width with a dummy head microphone arranged at the center. The top and bottom part comprised of 8 speakers each, paralleled to one another. A sound source is positioned on both sides using two mixers of two inputs and eight outputs. The four loudspeakers on the left and right sides are placed adjacent to the loudspeakers placed near the top and bottom vertices. In addition, four loudspeakers are placed on the left and right sides, 20 cm away from the other loudspeakers. The sound source is moved back and forth using a mixer of two inputs and eight outputs. However, the mixer outputs the two same signals. Therefore, the loudspeaker on the left side is placed to move in the opposite direction of the sound source movement on the right side. When binaural recordings are played with headphones, the sound image is localized out-of-head, although it differs between individuals. Meanwhile, the sound image is localized in the head in line recording. The tune "Wailing Wall" was performed using the whitening filter, Sallen-Key circuit, and state variable filter of the synthesizer system. These circuits are different and have different timbres. In particular, the output signals of the two whitening filters are input to a mixer, and the sound image of a two-channel speaker or sound source of an eight-channel speaker is moved. Thus, a novel acoustic is created. Using 24-channel loudspeakers, these signals are played from the upper eight-channel loudspeakers to have an impact on the listeners.