发明名称 EARPHONE WITH A SOUND GUIDING TUBE
摘要 An earphone with a sound guiding tube is provided. The sound guiding tube has an external chamber beside the ear. Compared with a conventional earphone which transmits sound directly into the ear, the earphone of the present invention has a external chamber which forms sound field outside the ear and then transmits the sound into the ear through a sound guiding tube in a particular angle. The earphone of the invention is suitable for stereo sound source or multiple-channel sound sources and will reduce damage caused by wearing the earphone for a long time.
申请公布号 US2007286446(A1) 申请公布日期 2007.12.13
申请号 US20060309359 申请日期 2006.07.31
申请人 YANG BILL 发明人 YANG BILL
分类号 H04R25/00 主分类号 H04R25/00
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