Rest | SuperCollider 3.12.2 Help

Description

A Rest may be used in event patterns to indicate that the resulting event should be a rest (i.e., silent). It should be used in one of the child patterns belonging to a Pbind, for instance.// do nothing for 2 seconds (note:Rest(), dur:2).play; // intersperse pauses in pattern Pbind(\note, Pseq([0, 4, 7, 11], inf), \dur, Pseq([2, 1, Rest(1)], inf) / 5).play;

Expressing rests in event patterns

The Rest class allows rests to be indicated in any stream, not only frequency or event type. Also, using the duration argument (see the *new method below), rests may be embedded into a duration stream. That is, rests may be treated as part of the rhythmic specification, rather than the pitch specification.

NOTE: As of SuperCollider 3.9, Rest's behavior has changed to be more intuitive. Note that you have to now use Rest() - the shortcut of Rest as class directly is not supported anymore.

Usage

Event: -isRest checks every item in the event to see if it meets the condition to be a rest: it may be a Rest instance, the Rest class, or either of the symbols \ or \r. If any item meets the condition, the event will be considered a rest and it will not take action when played.
If a Pbind child pattern yields a Rest object, the Rest is placed directly into the event. This is a change of behavior from 3.8.
If a Rest object has a value, it will respond to math operations: Rest(1) * 2 == Rest(2).

Class Methods

All methods of Rest except *new are private, and should not be used directly.

Rest.new(value: 1)

Create an instance of Rest, with a value to be used in the resulting rest event.

Arguments:

value

The Rest instance's numeric value, to be used in math operations. Note that a Rest's value is ignored for most Event keys (assuming the Event does nothing in response to .play). If a Rest appears in a rhythm key (dur or delta), then the number is the time until the next event. Consequently, numeric Rests are often used for duration -- but there is no requirement that a Rest's value must be a duration.

Discussion:

The rest of a rest is always a rest. This idempotence is implemented by Rest's superclass Operand.Rest(Rest(1)) // returns Rest(1)

Inherited class methods

Instance Methods

.isRest

returns true

.unwrapBoolean

returns the value.

Discussion:

This method implements the following behavior.Rest(6) + 1 // Rest(7) Rest(true) // true

This makes comparisons work:Rest(6) < 7 // true, and not Rest(true) a = Pseq([1, 2, 1, 3, Rest(1), 2, Rest(3)], inf); // e.g. as a duration pattern b = a.collect { |x| if(x > 2) { x / 2 } { x } }; b.asStream.nextN(8)

A Symbol may be specified in any frequency stream (under the keys degree, note, midinote or freq). The exception to this rule is control bus mapping symbols, beginning with 'c' followed by a number. Typical symbols that have been used include \rest, \r and the empty symbol \.p = Pbind( \degree, Pseq([ 0, 1, 2, 0, 0, 1, 2, 0, 2, 3, 4, \rest, 2, 3, 4, \rest ]), \dur, 0.25 ).play;
The event's \type may be set to \rest.p = Pbind( \degree, Pseries(0, 1, inf).fold(-7, 7), \dur, 0.125, \type, Pwrand([\note, \rest], [0.9, 0.1], inf) ).play; p.stop;

helpfile source: /usr/local/share/SuperCollider/HelpSource/Classes/Rest.schelp
link::Classes/Rest::

Rest : Operand : AbstractFunction : Object

Description

Expressing rests in event patterns

Usage

Class Methods

Rest.new(value: 1)

Arguments:

Discussion:

Inherited class methods

Instance Methods

.isRest

.unwrapBoolean

Discussion:

Inherited instance methods

Examples

Alternatives to Rest