Scapegoat

A mixer that moves the sound played from 8-channel speakers was developed in a synthesizer system using 24-channel speakers. The first mixer had 2 inputs and 8 outputs with a built-in amplifier. Subsequently, a mixer was developed to control the localization of the sound image of the 8 output signals of the first mixer and convert them into two signals. The second mixer had 8 inputs and 2 outputs. This work used the first to the fifth mixers from the 4th to the 6th track. The third and fourth mixers had 2 inputs and 8 outputs, each, with built-in amplifiers. As with the first mixer, the sound played from the 8-channel speakers could be moved. Eighteen output signals from the second to fourth mixers were input to the fifth mixer to control sound image localization. The sum of the output signals of the first, third, and fourth mixers was 24. As the fifth mixer had 20 inputs, the 8 outputs of the first mixer were converted to 2 outputs using the second mixer, and the output signals could be input to the fifth mixer. The 2 output signals from the fifth mixer were played on 2-channel speakers via amplifiers. However, the output voltage of the third and fourth mixers were halved and inputted to the fifth mixer. The conventional method uses a sixth mixer instead of the first mixer. This mixer had 2 inputs and 4 outputs with built-in amplifiers. The sound played from the 4-channel speakers could be moved. The output voltage was halved and inputted to the fifth mixer. In this case, the fifth mixer controls the localization of the 4 sound images. From Track 1 to Track 3 of this work, the third to the sixth mixers were used. As the number of outputs of the sixth mixer was half that of the first mixer, the number of controls for the sound image localization were reduced by half, and the acoustics were slightly degraded. To create a hard timbre, the synthesizer system used between 1-3 whitening filters, depending on the tune. Furthermore, novel acoustics were produced by controlling the sound image localization of the output signals of the first, third, and fourth mixers.