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Each time signature can be classified into a certain meter.
（每一种拍号都可以指定一种节拍）
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The terms duple, triple, and quadruple refer to the number of beats in a measure.
（二拍子、三拍子、四拍子指的是一小节中有多少拍）
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The term simple means that each of these beats can be broken into two notes.
（简单来说每一拍都可以分为两个音符）
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For example, 2/4 time is classified as simple duple.
（比如，四二拍的是简单二拍子）
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“Duple” refers to the two beats per measure.
（“二拍子”的意思是每小节有两拍）
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“Simple” states that each of these beats can be divided into two notes.
（“简单”的意思是每一拍都可以被分为两个音符）
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2/2 and 2/8 are also simple duple.
（二二拍、八二拍也是简单二拍子）
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3/4 time is classified as simple triple.
（四三拍是简单三拍子）
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“Triple” refers to the three beats per measure.
（“三拍子”的意思是每一小节有三拍）
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Again, “simple” states that each of these beats can be divided into two notes.
（同样，每一拍又可以再被分为两个音符）
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3/2 and 3/8 are also simple triple.
（二三拍和八三拍也是简单三拍子）
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4/4 time is classified as simple quadruple due to its four beats which can be divided into two notes.
（四四拍是简单四拍子，他的每一拍都可以被分为两个音符）
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4/2 and 4/8 are also simple quadruple.
（二四拍和八四拍也是简单四拍子）
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Notice that a time signature in simple meter will always have a 2, 3, or 4 for the top number.
（注意简单节奏的拍号上面的数字都是二、三、四）
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While beats in simple meter are divided into two notes, beats in compound meter are divided into three.
（而简单节奏中的一拍可以分为两个音符，而复合节奏中的一拍可以分为三个音符）
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To demonstrate this, we will examine 6/8 time.
（我们用八六拍演示一下）
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Notice that the six eighth notes can either be divided into two beats (compound duple) or three beats (simple triple).
（注意六个音符可以既被分为两拍也可以被分为三拍）
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Since the simple triple pattern already belongs to 3/4 time, 6/8 is compound duple.
（四三拍是简单三拍子，而八六拍是简单二拍子）
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Notice that each beat in 6/8 is a dotted quarter note. In fact, all compound meters will have some dotted note as its beat.
（八六拍中的每一拍都是一个附点四分音符。实际上所有的复合拍子都是以附点音符作一拍的）
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Any time signature with a 6 on top is compound duple. 6/8 and 6/4 are the most commonly used.
（拍号上方的数字是6的复合节奏都是复合二拍子，如八六拍、四六拍）
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9/8 time is classified as compound triple.
（八九拍是复合三拍子）
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There are three beats (three dotted quarter notes), thus making the meter triple.
（它的一小节由三个附点四分音符构成，所以它是三拍子）
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Since each beat is made up of three notes, the meter is compound.
（它的一个小节由三个音符构成，所以它是复合节奏）
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Any time signature with a 9 on top is compound triple. Although 9/8 is the most common; 9/2, 9/4, and 9/16 can also be used.
（所有九在上方的拍号都是复合三拍子，八九拍最常用，其次，二九拍、四九拍、十六九拍也比较常用）
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Finally, 12/8 time is classified as compound quadruple.
（最后，八十二拍是复合四拍子）
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There are four beats, thus making the meter quadruple.
（一小节有四拍，所以它是四拍子）
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Since each beat is made up of three notes, the meter is compound.
（每一拍分为三个音符，所以它是复合节奏）
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Any time signature with a 12 on top is compound quadruple. 12/8 and 12/16 are the most commonly used.
（所有十二在上方的拍子都是复合四拍子，八十二拍、十六十二拍最常用）