# Package javax.sound.midi

Provides interfaces and classes for I/O, sequencing, and synthesis of MIDI (Musical Instrument Digital Interface) data.

See: Description

Interface Summary
ControllerEventListener: The `ControllerEventListener` interface should be implemented by classes whose instances need to be notified when a `Sequencer` has processed a requested type of MIDI control-change event.
MetaEventListener: The `MetaEventListener` interface should be implemented by classes whose instances need to be notified when a ``Sequencer`` has processed a ``MetaMessage``.
MidiChannel: A `MidiChannel` object represents a single MIDI channel.
MidiDevice: `MidiDevice` is the base interface for all MIDI devices.
MidiDeviceReceiver: `MidiDeviceReceiver` is a `Receiver` which represents a MIDI input connector of a `MidiDevice` (see `MidiDevice.getReceiver()`).
MidiDeviceTransmitter: `MidiDeviceTransmitter` is a `Transmitter` which represents a MIDI input connector of a `MidiDevice` (see `MidiDevice.getTransmitter()`).
Receiver: A `Receiver` receives ``MidiEvent`` objects and typically does something useful in response, such as interpreting them to generate sound or raw MIDI output.
Sequencer: A hardware or software device that plays back a MIDI ``sequence`` is known as a sequencer.
Soundbank: A `Soundbank` contains a set of `Instruments` that can be loaded into a `Synthesizer`.
Synthesizer: A `Synthesizer` generates sound.
Transmitter: A `Transmitter` sends ``MidiEvent`` objects to one or more ``Receivers``.

Class Summary
Instrument: An instrument is a sound-synthesis algorithm with certain parameter settings, usually designed to emulate a specific real-world musical instrument or to achieve a specific sort of sound effect.
MetaMessage: A `MetaMessage` is a ``MidiMessage`` that is not meaningful to synthesizers, but that can be stored in a MIDI file and interpreted by a sequencer program.
MidiDevice.Info: A `MidiDevice.Info` object contains assorted data about a ``MidiDevice``, including its name, the company who created it, and descriptive text.
MidiEvent: MIDI events contain a MIDI message and a corresponding time-stamp expressed in ticks, and can represent the MIDI event information stored in a MIDI file or a ``Sequence`` object.
MidiFileFormat: A `MidiFileFormat` object encapsulates a MIDI file's type, as well as its length and timing information.
MidiMessage: `MidiMessage` is the base class for MIDI messages.
MidiSystem: The `MidiSystem` class provides access to the installed MIDI system resources, including devices such as synthesizers, sequencers, and MIDI input and output ports.
Patch: A `Patch` object represents a location, on a MIDI synthesizer, into which a single instrument is stored (loaded).
Sequence: A `Sequence` is a data structure containing musical information (often an entire song or composition) that can be played back by a ``Sequencer`` object.
Sequencer.SyncMode: A `SyncMode` object represents one of the ways in which a MIDI sequencer's notion of time can be synchronized with a master or slave device.
ShortMessage: A `ShortMessage` contains a MIDI message that has at most two data bytes following its status byte.
SoundbankResource: A `SoundbankResource` represents any audio resource stored in a ``Soundbank``.
SysexMessage: A `SysexMessage` object represents a MIDI system exclusive message.
Track: A MIDI track is an independent stream of MIDI events (time-stamped MIDI data) that can be stored along with other tracks in a standard MIDI file.
VoiceStatus: A `VoiceStatus` object contains information about the current status of one of the voices produced by a `Synthesizer`.

Exception Summary
InvalidMidiDataException: An `InvalidMidiDataException` indicates that inappropriate MIDI data was encountered.
MidiUnavailableException: A `MidiUnavailableException` is thrown when a requested MIDI component cannot be opened or created because it is unavailable.

## Package javax.sound.midi Description

Provides interfaces and classes for I/O, sequencing, and synthesis of MIDI (Musical Instrument Digital Interface) data.

## Related Documentation

For overviews, tutorials, examples, and guides, please see:

- Sound

Since:
  1.3