acoustic characteristic control device and an electronic musical instrument

摘要

PROBLEM TO BE SOLVED: To approximate spread of an acoustic image when allowing a listener to listen to a performance sound of an electronic piano via headphones, to spread of acoustic image when allowing the listener to listen to the sound via a speaker.;SOLUTION: Band division parts 11L and 11R divide output signals L and R of an electronic piano 90 into three bands. A signal generation part 12 extracts MID component signals M_L, M_M, and M_H and SIDE component signals S_L, S_M, and S_H from band division signals L_L, R_L, L_M, R_M, L_H, and R_H which belong to each band, mixes the signals M_L, M_M, and M_H and the signals S_L, S_M, and S_H in different ratios to generate component mixed signals LMX_L, RMX_L, LMX_M, RMX_M, LMX_H, and RMX_H, and supplies the signals LMX_L, LMX_M, and LMX_H to a left headphone unit 94L of headphones 93 and the signals RMX_L, RMX_M, and RMX_H to a right headphone unit 94R.;COPYRIGHT: (C)2013,JPO&INPIT