| 摘要 |
PURPOSE:To make easy operations such as automatic measurement and correction of transmitting frequency characteristics of sound field and manual setting of preferred characteristics, by providing a microcomputer and displaying this control signal with light. CONSTITUTION:A microcomputer 13 has functions outputting a control signal which switches a switching circuit corresponding to the maximum level of the frequency band in the order of frequency band stored and split in a program in an ROM at least, outputting a control signal adding or subtracting a signal level of a designated slit frequency band stored in a program of the ROM, and storing a complement of measured data in program-storage in the ROM to a designated address. Light display lamp groups D1, D2-D10 are provided at each split frequency of the control signals of the microcomputer 13. Thus, the microcomputer 13 and the light display lamp groups D1, D2-D10 are used. |
