ACOUSTIC DEVICE HAVING VOLUME CONTROLLING FUNCTION BY MICROPHONE

摘要

PURPOSE: An acoustic device having a volume controlling function by a microphone is provided to enable a user who uses a microphone to adjust an output volume of an amp device in a remote place without moving to the amp device for outputting a sound using a volume adjusting unit mounted in the microphone. CONSTITUTION: A microphone(100) includes an audio input unit(101) and a volume adjusting signal generating unit(102). The audio input unit(101) receives a sound signal and converts a vibration of a vibration plate into an electric signal by a special material as an electromagnet or a condenser element. The volume adjusting signal generating unit(102) generates and outputs an electric signal for performing a volume adjustment. Elements of an amp device(110) are described as follows. An audio signal receiving unit(111) receives an electric audio signal being transmitted in the audio input unit(101). An audio signal processing unit(112) processes the received audio signal and converts the signal for a transmission. A volume adjusting signal receiving unit(113) receives the volume adjusting signal transmitted from the volume adjusting signal generating unit(102). A volume adjusting unit(114) performs a volume adjustment in accordance with the received volume adjusting signal. An output unit(115) outputs the audio signal processed in the audio signal processing unit(112).