This document defines various musical note and rest values, including that an eighth note represents half a beat of sound, an eighth rest represents half a beat of silence, a quarter note represents one beat of sound, and a quarter rest represents one beat of silence. It also notes that a half note represents two beats of sound, a half rest represents two beats of silence, a whole note represents four beats of sound, and a whole rest represents four beats of silence.

1. eighth note,half a beat of sound
eighth rest,half a beat of silence
quarter note,one beat of sound
quarter rest,one beat of silence
half note,two beats of sound
half rest,two beats of silence
whole note,four beats of sound
whole rest,four beats of silence
dotted quarter note, one and one half beats of sound
dotted half note,three beats of sound
triplet,a group of three notes performed in the time of one