| 摘要 |
PURPOSE:To provide the on-vehicle sound field correction device controlling a spread sense of a sound image without need of a large scale hardware. CONSTITUTION:The device is provided with a 1st sound field correction FIR filter 109 revising a digital audio input signal to have a horizontally symmetrical characteristic at both ears of a listener, a 2nd sound field correction FIR filter 113 adding a desired reflecting wave component to both ears of the listener, a multiplier 121 revising the reflecting wave component to be added by revising an input level to the 2nd sound field correction FIR filter 113, a coefficient revision device 131 revising the coefficient based on a spread sense control signal, and an adder 123 adding outputs of the 1st and 2nd sound field correction FIR filters 109, 113 to control a spread sense of the sound image based on the spread sense control signal. |
