3D ACOUSTIC PARALLEL SIGNAL PROCESSING SYSTEM

PURPOSE: To remarkably reduce the capacity of a coefficient data memory, surely executing the parallel filter processing by two DSPs(digital signal processors). CONSTITUTION: This system is provided with two first and second DSP 1 and 2 performing each filter processing for the left and right channel signals of a stereo. In a first coefficient data memory 3, the coefficient data for left channel in the direction range of 0 deg. to +180 deg. is stored. In a second coefficient data memory 4, the coefficient data for right channel in the same direction range of 0 deg. to +180 deg. is stored. The signal showing whether a sound source direction is within the range of the 0 deg. to +180 deg. or not is inputted as a switch signal SW in selectors 5 and 6. When the switch signal is '1', the first and second coefficient data memories 3 and 4 are connected with the first and second DSP 1 and 2, respectively. When the switch signal is '0', the first and seconds coefficient data memories 3 and 4 are connected with the second and first DSP 2 and 1, respectively.