| 摘要 |
PROBLEM TO BE SOLVED: To improve the sound quality of a self-voice recognition device for easily and objectively hearing self-voice without using electricity so as to clearly hear a minute part and to provide an earphone used for the device. SOLUTION: The self-voice recognition device has a voice collection part 30 on one end side of a sound conductor 20 and an earphone part 40 that is put on the hole of an ear on the other end side. A vent tube 42 led to air is installed in a sound guide hole 44 in the earphone part 40, which guides sound transmitted through the sound conductor 20 into the ear through the inner sound guide hole 44. Vent parts 6, 6b and 6c are installed at the sound guide hole 4 in earphones 1a, 1b and 1c. |
