发明名称 Internally-Mounted Soundhole Interfacing Device
摘要 Disclosed is a device for improving the tonal characteristics of a stringed instrument. This has been accomplished using a device that interfaces acoustically with the soundhole. The device inhabits space where sound energy waves tend to interfere and redirects the sound energy out of the soundhole. This prevents distortion and delivers more fullness in sound.
申请公布号 US2009199695(A1) 申请公布日期 2009.08.13
申请号 US20090426790 申请日期 2009.04.20
申请人 SCHMIDT ERIC 发明人 SCHMIDT ERIC
分类号 G10D3/00 主分类号 G10D3/00
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