6-6 Structural Influence On A String

What structures are necessary to produce a sound on a string?

Strings need structures to help move the air and make it loud enough for the audience to hear. The following structures are crucial on all string instruments:

    - Bridge
    - Resonator box

What is a resonator?

The resonator is the structure which amplifies the sound waves. On the violin, viola, cello, or bass this is the body of the instrument. On the piano this is the soundboard.

Resonators may respond to different frequencies differently. This means that some frequencies will be amplified more depending on the individual resonator.

Is there a way to determine the level of response from a resonator?

    R = 10 log (I/Iref)
    where R is the response, I is the intensity, and Iref is the reference intensity

The units for response is decibels.

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