Free sheet music for classical guitar -
Delcamp.org Publications -
when we see some guitars with D shaped holes and holes on the edge of the upper bout sound board does this really help or do anything for the sound or just a change in general appearence,,
appreciate any comments on actual data or hearing such instruments,,
Te diameter of the hole depends on the box volume. Some people call the combined effect of internal volume and hole diameter the Helmholtz resonance frequency. That is the tone you get fron blowing air across the hole. In general, smaller shallower bodys have smaller diameter holes - Hauser used 84 mm, other similar-sized instruments are 84 to 86 or so. Larger bodied instruments may have a 89mm hole. Adjusting the hole size affects the bass and treble balance for a given cavity volume.
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