Looking at the duration of the notes, the quarter note is one beat, with 2 beats per measure. Four-three beats are based on quarter notes, with 3 beats per measure. Four-quarter time is a quarter note, with 4 beats per measure. Of course, two-two beats are very similar to four-four beats, just pay attention to the duration of the notes.

Listen: The first step is to distinguish between double beats (2/2, 2/4, 4/4) and single beats (3/4, 3/8/6/8, 9/8). The first step is easier. Find the strongest beat, one strong and one weak. If your strong beat always matches the song at even numbers, it means it is in double time. Extended information

The denominator represents the basic duration of the beat, that is, how many quarter notes are used as one beat, and the numerator represents how many beats there are in each measure. For example: 2/4 means that one beat is a quarter note, and each measure has two beats; 3/4 means that one beat is a quarter note, and each measure has three beats; 3/8 means that one beat is an eighth note, and each measure is one beat. There are three beats in a measure.

There are only three denominator parts of the time signature: 2, 4, and 8. That is to say, half notes, quarter notes, and eighth notes are used as the basic time values ??of the beats. The reason why time signatures are written as fractions is because whole notes are treated as integers and the basic unit for immediate value division in the staff.

Baidu Encyclopedia-Music Beat