SOUND VOLUME CONTROLLING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a sound volume controlling method for suppressing noise even when the change of a sound volume control value from a microcomputer is large in the sound volume controlling method which is used in various kinds of AV instruments and uses the microcomputer and an electronic volume. SOLUTION: A buffer 4 for converting a set value 6 from the microcomputer 3 to a small consecutive change of a period 9 is inserted between the microcomputer 3 and the electronic volume 5. By this constitution, even when the change of the set value 6 from the microcomputer 3 is large, electronic volume control with small noise can be performed.