Arranging : Time, Tempo, Meter, Key, and Chords : Identify Beat Command

Identify Beat Command
For more information, see the following topics:
The Identify Beat command lets you establish a tempo/meter map for audio that was recorded without a click, or for imported audio with unknown tempos.
The Identify Beat command analyzes a selection range (usually with a distinct number of beats or measures) and calculates its tempo based on the specified meter. In doing this, Bar|Beat Markers for the calculated tempo are inserted and appear in the Tempo ruler at the beginning and end of the selection; in addition, meter events are inserted into the Meter ruler.
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Use Beat Detective to generate Bar|Beat Markers within a selection that includes rhythmic changes on beats or sub-beats (see Beat Detective).