Meter (Time Signature)

beat

the pulse that is felt or conducted

simple meter

meter in which subdivisions are in groups of two

compound meter

meter in which subdivisions are in groups of three

mixed meter

meter in which subdivisions are in a combination of groups of two and three

duple

meter in which there are two felt beats (regardless of if simple or compound)

triple

meter in which there are three felt beats (regardless of if simple or compound)

quadruple

meter in which there are four felt beats (regardless of if simple or compound)