| 摘要 |
This invention provides for increased resonance quality and volume in a stringed instrument having a resonant chamber, where the chamber has a defined opening that is also known as a "sound hole." Guitars and related instruments tend to have sound holes defined as rounded or circular openings. Violins and related instruments tend to have a more ornate sound hole, similar to an "S" or "f" shape. The increase in sound volume and quality is derived from resonance flanges, that are positioned adjacent to the sound hole, within the resonance chamber, and which define curved surfaces that affect the sound waves striking them. The resonance flanges are defined by internal expanding curved edges, that are attached to the inner side of the resonant chamber, adjacent to the sound hole opening, and exhibit a defined curve away from the sound hole opening. As vibrational sound waves move into the resonant chamber, the sound waves strike various the inner walls of the chamber, and the pressure created by the sound waves are expelled back out the sound hole. The resonance flanges provide an increase in volume to the vibrational sound waves, due to the bell or horn shape of the flanges, which effect the sound saves in a manner similar to how a trumpet horn or bell shape affects the sound emanating from the tube end of a trumpet.
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