| 摘要 |
PURPOSE:To allow even an unskillful person to set easily a desired characteristic by displaying a frequency characteristic to be set. CONSTITUTION:A DSP 10 filters an input signal according to its parameter and provides a resulting output. The parameter to the DSP 10 is given from a CPU 14. The CPU 14 is provided with a display section 16 and it has an operation window 18 and a frequency characteristic display window 20 and variable slide resistors 22 corresponding to various frequencies are indicated horizontally in the operation window 18. An operation section 31 is used to designate a specific variable resistor 22 and moves its knob 24 in the vertical direction, then a gain for a frequency corresponding to the specific variable resistor 22 is indicated according to the movement and a frequency characteristic diagram is displayed on the frequency characteristic display window 20 accordingly. The CPU 14 decides a parameter given to the DSP 10 to satisfy the designated frequency characteristic and gives it to the DSP 10. |
