PURPOSE: To prevent sound noise at the time of level changeover in the digital electronic volume.

CONSTITUTION: The circuit is provided with a level control circuit 2 controlling a level of an input voltage given according to digital volume data to provide an output, and an integration circuit 3 integrating an output of the level control circuit 2 and D/A converter circuit 1 receiving an output of the integration circuit 3 as a reference input voltage whose output level depends on the reference input voltage. Since an envelope of an analog signal output of the D/A converter circuit 1 is not rapidly changed even when the level is controlled by discrete volume data, the generation of sound noise at the time of a volume change is prevented.