| 摘要 |
PURPOSE:To decrease the number of arithmetic steps, executed by a DSP(Digital Signal Processor) which should provide, specially, an expansion feeling in a music hall, as to the sound field controller which provides the expansion feeling. CONSTITUTION:The sound field controller is provided with a 1st initial reflected sound generation part 4 which extracts delay data from plural optional taps of a delay memory and generates a basic initial reflected sound representing plural initial reflected sounds through a multiplier 2 and an adder 3, and a 2nd initial reflected sound generation part 8 composed of the delay memory 5 which inputs the output data of the adder 3 in sampling cycles and has a delay time shorter than the delay time of tap intervals of the delay memory 1, multipliers 6 which adjust the amplitudes of delay data from the respective taps of the delay memory 5, and an adder 7 which composes data of the output data of the respective multipliers 6 and generates one group of subordinate initial reflected sound for the basic initial reflected sound. |
