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Sound

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sound level
A logarithmic scale that measures amplitudes; depends on the ratio of the pressure variation of a particular sound wave to the pressure variation in the most faintly heard sound; unit of measurement is the decibel. dB.
decibel
a logarithmic unit of sound intensity
pitch
the property of sound that varies with variation in the frequency of vibration
Doppler Shift
change in the apparent frequency of a wave as observer and source move toward or away from each other
closed-pipe resonator
a resonating tube with one end closed to air; its resonant frequencies are odd-numbered multiples of the fundamental
open-pipe resonator
a resonating tube with both ends open that also will resonate with a sound source; its resonant frequencies are whole number multiples of the fundamental
timbre
quality of a musical tone produced by a musical instrument (which distinguishes it from others of the same pitch)
fundamental
the lowest tone of a harmonic series
harmonic
A component of a complex tone; one of a series of tones whose frequency is a multiple of the fundamental frequency. In music theory, also known as an overtone
dissonance
harsh, inharmonious, or discordant sounds
consonance
the property of sounding harmonious
octave
a musical interval of eight tones
beat
produce a rhythm by striking repeatedly