1/4 beat: 1/4 beat is a quarter note, 1 beat per measure.

2/4 beat: 2/4 beat is a quarter note, with 2 beats per measure, and there can be two quarter notes. Strong, weak.

3/4 beat: 3/4 beat is a quarter note, with 3 beats per measure, and there can be three quarter notes. Strong, weak, weak.

4/4 time: 4/4 time is a quarter note as one beat, each measure has 4 beats, and there can be 4 quarter notes. Strong, weak, sub-strong, weak.

3/8 beat: 3/8 beat is an eighth note, and each measure can be one beat, but there are actually 3 beats. There can be 3 eighth notes. Strong, weak, weak.

6/8 beat: 6/8 beat is an eighth note, and each measure can be divided into two major beats. However, in fact, each measure has 6 beats, and there can be 6 eighth notes. Strong, weak, weak; second strong, weak, weak.

Extended information

Music always alternates between strong beats and weak beats. This alternation cannot be chaotic and arbitrary, but should form a minimum beat organization according to certain rules. section, and then cycle back and forth based on that. For example, when there is only one weak beat between two strong beats, it is called "two beats", which is the type of 2/4 beat; when there are two weak beats between two strong beats, it is called "triple beat".

If a measure contains more than two single beats of the same type and has more than two stresses, it is called "compound beat" or "complex beat". At this time, the beat after the bar line is of course the accent and is still called a strong beat. The second accent position is slightly weaker in intensity and is called a "sub-strong beat".

Baidu Encyclopedia—Music Beat