| A | B |
| sound level | the amplitude of sound, as measured on a logarithmic scale is called |
| harmonic | any high frequency that is a multiple of the fundamental frequency is a(n) |
| beat | an oscillation of wave amplitude caused by the sounding of two nearly identical fequencies |
| decibel | a unit used to measure sound level |
| dissonance | a jarring combination of pitches |
| octave | two frequencies in a 1:2 ratio |
| fundamental | the lowest frequency that will resonate in a pipe |
| Doppler shift | the apparent change in pitch caused by the motion of the sound source |
| pitch | the apparent highness or lowness of a note |
| consonance | a pleasant combination of pitches |