Guitar It is flat on classical guitars and slightly curved crosswise on acoustic and electric guitars. The curvature of the fretboard is measured by the fretboard radius, which is the radius of a hypothetical circle of which the fretboard's surface constitutes a segment. The smaller the fretboard radius, the more noticeably curved the fretboard is. Most modern guitars feature a 12" neck radius, while older guitars from the 1960s and 1970s usually feature a 6-8" neck radius. Pinching a string against a fret on fretboard effectively shortens the vibrating length of the string, producing a higher pitch. Fretboards are most commonly
Touch guitar interactions with plectrums and fingers can all be mimicked digitally: in some cases, fret spacing and relationships can also be customized. Touch guitar The touch guitar is a musical instrument of the guitar family which has either been designed or adapted to use a fretboard-tapping playing style. Although "Touch Guitar" was registered as a trademark by musician and instrument designer Markus Reuter in the late 2000s, the term has been used formally or informally for a variety of instruments since the 1950s. The touch-style playing technique has been traced back to a variety of sources and players (including Merle Travis)