| 摘要 |
PURPOSE:To obtain excellent reverberations by providing a correction coefficient generating means and controlling a reverberation signal generating means which increases additional reverberation signals as a vehicle speed increases based on vehicle speed information generated by a vehicle speed sensor. CONSTITUTION:The reverberation signal generating means 2 generates the additional reverberation signals corresponding to an acoustic signal. Those signals are processed by amplifiers, etc., and then outputted from speakers, and reverberations are adjustable by varying the additional reverberation signals. In general, when noises in a vehicle increase as the travel speed of the vehicle increases, reverberations become deficient in the reverberation regulated so as to be optimum in the state of low noise. For the purpose, the correction coefficient generating means 9 controls the reverberation signal generating means 2 so that the additional reverberation signals are so varied as to increase the reverberations as the travel speed increases according to the travel speed of the vehicle detected by the vehicle speed sensor 4. Consequently, when the travel speed increases and the noises increase, the reverberations also increase and an excellent sound is heard. |
