| 摘要 |
PURPOSE:To realize the acoustic image movement having a sense of spread by using an acoustic image localizing means which orients an acoustic image even in a position other than the segment connecting right and left speakers and moving the acoustic image by multidimensional movement information. CONSTITUTION:The low frequency signal from a first LFO 27 is a 2.0Hz sine wave signal and has a middle amplitude, and that from a second LFO 28 is a 1.0Hz sine wave signal and has a middle amplitude. When a key is depressed, a music signal TS is generated in a set tone, and the acoustic image position is a little lightly oscillated in the vertical direction with 2.0Hz by a notch filter 21 and is moderately oscillated in the transverse direction with 1.0Hz by FIR filters 22 and 23. That is, the acoustic image is moved while describing the figure of 8 in the transverse direction. When a joystick is brought down to the right in this state, the figure of 8 is gradually moved to the right, and it is completely brought down to the right, and in this state, the acoustic image is so moved that it describes the figure of 8 long sideways from the right front to the right rear with the just right as the center. |
