List of Objects

Engines

Type	Description
Realtime	Runs a graph in realtime using the system audio I/O.
Offline	Processes a graph with audio file inputs and outputs.
Manual	Manually processing audio buffers.
WebSocket	Processing audio coming on a WebSocket channel.

Graphs

There is only a single implementation of AudioGraph which you can read about here.

Nodes

Type	Description
AudioPlayer	Plays audio from a buffer or file source, functioning as a basic audio source.
BusSelect	Selects a specific audio bus from a multi-bus stream for further processing.
BusSplitter	Splits an incoming audio signal into individual bus outputs.
BusSwitch	Dynamically switches between multiple input buses.
ChannelSplitter	Divides a multi-channel audio signal into separate single-channel outputs.
ClippingDetector	Detects when an audio signal exceeds the maximum level, potentially causing distortion.
Crossfader	Smoothly blends between two input audio signals.
Discard	Discards incoming audio without processing or forwarding it.
Gain	Adjusts the amplitude of the audio signal, effectively controlling its volume.
Invert	Inverts the polarity (phase) of the incoming audio signal.
Mixer	Combines multiple audio inputs into a single output mix.
MonoBusMerger	Merges several mono audio buses into a single bus multi-channel output.
MonoToMultiChannel	Converts a mono signal into a multi-channel output by duplicating the input.
MultiChannelToMono	Mixes multiple channels down into a single mono signal.
MusicDucking	Lowers background music volume when another signal, like voice, is detected.
Mute	Silences the audio signal without stopping the stream.
NoiseGate	Suppresses signals below a certain threshold, reducing background noise.
Offset	Adds a constant value (DC offset) to the audio signal.
Passthrough	Forwards audio without modification, useful for routing or diagnostics.
Recorder	Captures incoming audio and stores it for playback or export.
ResampedSink	Receives audio and resamples it to a different sample rate for an embedded audio node.
ResampledSource	Outputs audio that has been resampled from another sample rate of an embedded audio node.
Resampler	Changes the sample rate of the audio stream.
Silence	Generates a silent audio signal, typically used for timing or control.
SineGenerator	Generates a sine wave signal, often used for testing or as a basic audio source.
StereoBusMerger	Merges multiple stereo buses into a unified stereo bus output.
StereoPanner	Adjusts the left-right stereo balance of the audio signal.
SubgraphProcessor	Processes audio using a subgraph, allowing for modular and reusable signal chains.
SubgraphSink	Audio sink that embeds another audio graph.
SubgraphSource	Audio source that embeds another audio graph.
SynchronizedAudioPlayer	Plays audio in sync with a timeline or other synchronized events.
Timeline	Manages time-based events and synchronization within an audio graph.
TimelineQuantizedTrigger	Triggers actions aligned to timeline quantization points, useful for music timing.
Timer	Generates timing events or values at a specified interval.
VoiceActivityDetector	Detects the presence of voice in an audio stream for use in gating or ducking.
VUMeter	Measures audio signal levels for monitoring purposes.
WhiteNoiseGenerator	Produces a white noise signal, often used for testing or audio masking.

Extensions

The list of available nodes can be expanded by implementing a custom Switchboard SDK extension. For more details on how to create your own extension, please contact us.