(A) ;FORWARD AND BACKWARD ADJUSTABLE OPERATION PEDAL DEVICE

摘要

PURPOSE:To decrease the number of parts to be incorporated in an instrument by obtaining a sound source tip which can respond to voice input from various kinds of external sound sources. CONSTITUTION:A provision of an input terminal to receive voice signals from outside within an internal mixer circuit of a sound source tip makes it possible to mix voice signals from the outside of the sound source tip. In order to respond to the external sound source outputs whose volume has not been controlled, an input terminal to receive the outside voices is provided in an internal volume circuit, and the internal volume circuit outputs to the internal mixer circuit.