An empty pattern

Takes a function from time to values, and turns it into a Pattern.

sine returns a Pattern of continuous Fractional values following a sinewave with frequency of one cycle, and amplitude from 0 to 1.

cosine is a synonym for 0.25 ~> sine.

saw is the equivalent of sine for (ascending) sawtooth waves.

isaw is the equivalent of sine for inverse (descending) sawtooth waves.

tri is the equivalent of sine for triangular waves.

square is the equivalent of sine for square waves.

envL is a Pattern of continuous Double values, representing a linear interpolation between 0 and 1 during the first cycle, then staying constant at 1 for all following cycles. Possibly only useful if you're using something like the retrig function defined in tidal.el.

like envL but reversed.

'Equal power' version of env, for gain-based transitions

Equal power reversed

Turns a list of values into a pattern, playing through them once per cycle.

A synonym for fromList

'fromMaybes; is similar to fromList, but allows values to be optional using the Maybe type, so that Nothing results in gaps in the pattern.

A pattern of whole numbers from 0 to the given number, in a single cycle.

From 1 for the first cycle, successively adds a number until it gets up to n

Alternate between cycles of the two given patterns

Like append, but for a list of patterns. Interlaces them, playing the first cycle from each in turn, then the second cycle from each, and so on.

Alias for cat

Alias for append

Like append, but twice as fast

The same as cat, but speeds up the result by the number of patterns there are, so the cycles from each are squashed to fit a single cycle.

Similar to fastCat, but each pattern is given a relative duration

overlay combines two Patterns into a new pattern, so that their events are combined over time.

An infix operator, an alias of overlay

stack combines a list of Patterns into a new pattern, so that their events are combined over time.

Shifts a pattern back in time by the given amount, expressed in cycles

Shifts a pattern forward in time by the given amount, expressed in cycles

Speed up a pattern by the given time pattern

Slow down a pattern by the factors in the given time pattern, squeezing the pattern to fit the slot given in the time pattern

An alias for fast

Slow down a pattern by the given time pattern

Slow down a pattern by the factors in the given time pattern, squeezing the pattern to fit the slot given in the time pattern

An alias for slow

rev p returns p with the event positions in each cycle reversed (or mirrored).

Plays a portion of a pattern, specified by a time arc (start and end time). The new resulting pattern is played over the time period of the original pattern:

d1 $ zoom (0.25, 0.75) $ sound "bd*2 hh*3 [sn bd]*2 drum"

In the pattern above, zoom is used with an arc from 25% to 75%. It is equivalent to this pattern:

d1 $ sound "hh*3 [sn bd]*2"

fastGap is similar to fast but maintains its cyclic alignment. For example, fastGap 2 p would squash the events in pattern p into the first half of each cycle (and the second halves would be empty). The factor should be at least 1

An alias for fastGap

• Higher order functions

Functions which work on other functions (higher order functions)

every n f p applies the function f to p, but only affects every n cycles.

every n o f' is like every n f with an offset of o cycles

foldEvery ns f p applies the function f to p, and is applied for each cycle in ns.

Only when the given test function returns True the given pattern transformation is applied. The test function will be called with the current cycle as a number.

d1 $ when ((elem '4').show)
  (striate 4)
  $ sound "hh hc"

The above will only apply `striate 4` to the pattern if the current cycle number contains the number 4. So the fourth cycle will be striated and the fourteenth and so on. Expect lots of striates after cycle number 399.

Like when, but works on continuous time values rather than cycle numbers.