| 摘要 |
PURPOSE:To obtain an excellent sense of spread by adding delayed audio signals only by a predetermined number and supplying a sum output to a correlation control filter means so as to set an inter-both auditory tube correlation function to an optimum value. CONSTITUTION:Input audio signals at every L, R channel are respectively delayed 11L, 11R to generate plural delay audio signals with delay time different. A predetermined number of delayed audio signals among them are introduced and added by adders 13, 15, 17, 19 and the sum output is fed to correlation function control filter means 2, 3 as the output of a reverberation generating means 1. Then delay time of the introduced delay audio signal is selected to maximize the correlation number and the delay time of the all pass filter of the filter means 2, 3 and the multipling coefficient are set properly to set the inter-both auditory tube correlation function is set to an optimum value to obtain an excellent sense of spread. |
