Environment:      Siren
Superclass:         Siren.PortModel
Category:         MusicIO-Sound

SoundPort instances are interfaces to real-time sound I/O streams.

Concrete subclasses add primitive interfaces to special devices such as audio ports or coprocessors.

open/close

close
   Close the receiver sound port

open
   Open the receiver sound port

start
   Start the receiver sound port

stop
   Stop the receiver sound port

initialize/release

initialize
   Answer an initialized version of the receiver.

release
   Terminate and release the receiver.

play/record

play: aSound
   Play the argument on the receiver over the DACs.

play: aSound from: start to: stop
   Play the argument on the receiver over the DACs.

record: aSound
   Record into the argument via the receiver.

MetaClass:         SoundPort class

class initialization

initializeData
   Set up the defaults for the class constants.

instance creation

concreteClass
   Answer the appropriate subclass.

default
   Answer a default instance of the appropriate subclass.

defaultOrNil
   Answer the default instance of the appropriate subclass if it's set up.