AlphaSynth

AlphaSynth is one of the low level APIs that can be used if no full alphaTab API object with UI interaction can be used or is needed. It is the audio synthesis engine of alphaTab which is used to play a midi file using a generated midi file and a SoundFont as input.

This page describes all methods, properties and events exposed by this class. Most of the API methods exposed by the IAlphaSynth interface are also directly available on the normal API object. That's why many documentation pages delegate to the related documentation pages there.

Name	Summary
Events
`finishedJavaScript` `Finished.net` `finishedAndroid`	This event is fired when the playback of the whole song finished.
`midiEventsPlayedJavaScript` `MidiEventsPlayed.net` `midiEventsPlayedAndroid`	The midi events which will trigger the `midiEventsPlayed` event
`midiLoadFailedJavaScript` `MidiLoadFailed.net` `midiLoadFailedAndroid`	This event is fired when the loading of the Midi failed.
`midiLoadedJavaScript` `MidiLoaded.net` `midiLoadedAndroid`	This event is fired when the Midi needed for playback was loaded.
`playbackRangeChangedJavaScript` `PlaybackRangeChanged.net` `playbackRangeChangedAndroid`	This event is fired when the playback range changed.
`positionChangedJavaScript` `PositionChanged.net` `positionChangedAndroid`	This event is fired when the playback state changed.
`readyJavaScript` `Ready.net` `readyAndroid`	Fired when the player is ready to be interacted with.
`readyForPlaybackJavaScript` `ReadyForPlayback.net` `readyForPlaybackAndroid`	This event is fired when all required data for playback is loaded and ready.
`soundFontLoadFailedJavaScript` `SoundFontLoadFailed.net` `soundFontLoadFailedAndroid`	This event is fired when the loading of the SoundFont failed.
`soundFontLoadedJavaScript` `SoundFontLoaded.net` `soundFontLoadedAndroid`	This event is fired when the SoundFont needed for playback was loaded.
`stateChangedJavaScript` `StateChanged.net` `stateChangedAndroid`	This event is fired when the playback state changed.
Methods
`destroy()JavaScript` `Destroy().net` `destroy()Android`	Destroys the synthesizer and all related components.
`loadMidiFile()JavaScript` `LoadMidiFile().net` `loadMidiFile()Android`	Triggers a load of the given midi file.
`loadSoundFont()JavaScript` `LoadSoundFont().net` `loadSoundFont()Android`	Triggers a load of the soundfont from the given data.
`pause()JavaScript` `Pause().net` `pause()Android`	Pauses the playback of the current song.
`play()JavaScript` `Play().net` `play()Android`	Starts the playback of the current song.
`playPause()JavaScript` `PlayPause().net` `playPause()Android`	Toggles between play/pause depending on the current player state.
`resetChannelStates()JavaScript` `ResetChannelStates().net` `resetChannelStates()Android`	Resets the mute/solo change of all channels.
`setChannelMute()JavaScript` `SetChannelMute().net` `setChannelMute()Android`	Mutes or unmutes a single midi channel.
`setChannelSolo()JavaScript` `SetChannelSolo().net` `setChannelSolo()Android`	Flags a single midi channel to e played solo or not.
`setChannelVolume()JavaScript` `SetChannelVolume().net` `setChannelVolume()Android`	Sets the current and initial volume of the given channel.
`stop()JavaScript` `Stop().net` `stop()Android`	Stops the playback of the current song, and moves the playback position back to the start.
Properties
`countInVolumeJavaScript` `CountInVolume.net` `countInVolumeAndroid`	The volume of the count-in metronome ticks
`isLoopingJavaScript` `IsLooping.net` `isLoopingAndroid`	Whether the playback should automatically restart after it finished
`isReadyJavaScript` `IsReady.net` `isReadyAndroid`	If the synthesizer is ready for interaction.
`isReadyForPlaybackJavaScript` `IsReadyForPlayback.net` `isReadyForPlaybackAndroid`	If the synthesizer is ready for playback.
`logLevelJavaScript` `LogLevel.net` `logLevelAndroid`	The log level to use within alphaSynth.
`masterVolumeJavaScript` `MasterVolume.net` `masterVolumeAndroid`	The current master volume as percentage
`metronomeVolumeJavaScript` `MetronomeVolume.net` `metronomeVolumeAndroid`	The metronome volume as percentage
`midiEventsPlayedFilterJavaScript` `MidiEventsPlayedFilter.net` `midiEventsPlayedFilterAndroid`	The midi events which will trigger the `midiEventsPlayed` event
`playbackRangeJavaScript` `PlaybackRange.net` `playbackRangeAndroid`	The range of the song that should be played
`playbackSpeedJavaScript` `PlaybackSpeed.net` `playbackSpeedAndroid`	The current playback speed as percentage
`stateJavaScript` `State.net` `stateAndroid`	The current player state.
`tickPositionJavaScript` `TickPosition.net` `tickPositionAndroid`	The position within the song in midi ticks
`timePositionJavaScript` `TimePosition.net` `timePositionAndroid`	The position within the song in milliseconds