| 摘要 |
PURPOSE:To obtain a natural sound image location even to either of listening position of a driver's seat and an assistant driver's seat by correcting a phase difference at a listening position between both left and right channels caused due to a different listening position while being shared through respective channels. CONSTITUTION:Analog phase correction means 2L, 2R are connected between left/right channel input terminals 1L, 1R and power amplifiers 3L, 3R and a phase difference between acoustic output signals of both left and right channels is close to a phase difference between arrival signal sounds of both left and right channels at listening positions 5L, 5R to cancel the phase difference between acoustic output signals of both the left and right channels. Thus, a sense of different phase having been felt in a conventional device at a driver's seat 5R and an assistant driver's seat 5L is improved and the generation of deterioration in the sound quality is avoided. |
