Guitar Bodies

The individual static Forces and Torques on the strings can create interference patterns in the face of the guitar (Fletcher 211). The main components of the body that create sound are the top plate, which resonates more with high frequency pitches, and the back plate which has a higher tendency to vibrate with lower frequency pitches. With the sound being transfered into the wood from the strings via the bridge, a resonance pattern is formed on the face of the guitar. This pattern changes with individual instruments, and luthieres have been experimenting for centirues on different patterns of small wooden struts which are attached to the face and back of the guitar to channel these waves (Evans 83).

Bracing in a Gibson Mark guitar. (Evans 272)

Also different materials affect this, as sound propogates differently through materials of different densities. Guitars are often made from materials like spruce which is finely grained, and thus good for transmitting sound without loosing too much energy.