| 摘要 |
PROBLEM TO BE SOLVED: To provide a headphone device capable of preventing that the device is disabled to correctly cancel external noisy sound and external noise since vibration is produced as when cable touches or rubs clothing and shoes etc.SOLUTION: The headphone device includes a housing, a flange fixed to the front end of the housing, a cable, a microphone, a signal processor, and a driver unit. The cable has a lead wire inside and an input terminal at one end. The microphone picks up ambient noisy sound or noise and outputs a noisy sound/noise signal. The signal processor is electrically connected to the lead wire, and inputs an audio signal inputted by the input terminal and reverses the phase of the signal inputted from the microphone. The driver unit has a diaphragm for emitting the audio signal outputted from the signal processor and signals with the reversed phase of the noisy sound/noise inputted from the microphone. The microphone is fixed to the inside of the housing by an elastic body having elasticity. |
