Environment:      Siren
Superclass:         Siren.Voice
Category:         MusicIO-MIDI
Instance variables:   currentTime
Class instance variables:   default
Class variables:      Instance UseSingleton

A MidiVoice is used to play note events onto one or more output devices.
I store a MidiDevice (with a MIDIPort) in my instrument variable and play events onto it when asked to.

Instance variables:
   instrument    my instrument, a MidiDevice

initialize-release

close
   Close the stream, device, or whatever.

initialize
   Set up a MIDIVoice's time counter.

reset
   Reset my time.

events

play: anEventList
   Expand the list and play it now.

playEvent: anEvent at: aTime
   Send the given Event to the instrument.

accessing

number
   Answer my channel or icon number

MetaClass:         MIDIVoice class

Instance variables:   default

examples

randomExample
   Play some random notes on a voice on a device on a port.

scaleExample
   Play a scale on a voice on a device on a port to the Apple MIDI Mgr.

voiceInspect
   MIDIVoice voiceInspect

instance creation

default
   Answer the default MIDIVoice.

named: aName onDevice: aMidiDevice channel: aChannel
   set up a MidiVoice on the given device and channel

new
   Cache the latest instance.

on: aMidiDevice
   Answer up a MidiVoice on the given device.

on: aMidiDevice channel: aChannel
   set up a MidiVoice on the given device and channel

class initialization

defaultOutInterface
   Answer the class's default intertface # (use external device list to get the right value).

flushDefault
   Reset the class's default instance.

initialize
   Reset the class's default instance.