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Type: compress :: (Time, Time) -> Pattern a -> Pattern a

compress takes a pattern and squeezes it within the specified time span (i.e. the 'arc'). The new resulting pattern is a sped up version of the original.

d1 $ compress (1/4, 3/4) $ s "[bd sn]!"

In the above example, the pattern will play in an arc spanning from 25% to 75% of the duration of a cycle. It is equivalent to:

d1 $ s "~ [bd sn]! ~"

Another example, where all events are different:

d1 $ compress (1/4, 3/4) $ n (run 4) # s "arpy"

It differs from zoom in that it preserves the original pattern but it speeds up its events so to match with the new time period.