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.
change in the apparent frequency of a wave as observer and source move toward or away from each other
a resonating tube with one end closed to air; its resonant frequencies are odd-numbered multiples of the fundamental
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
quality of a musical tone produced by a musical instrument (which distinguishes it from others of the same pitch)
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