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Sound Output Write (G Dataflow)

Last Modified: June 1, 2017

Writes data to a sound output device. You must use Sound Output Configure to configure the device if you are writing continuously.

You must have DirectX 8.0 or later to use this VI.


If the buffer you set using the number of samples/ch input of Sound File Read is full when the application executes, LabVIEW automatically implements a wait on Sound Output Write even if you set timeout to 0. This may cause the data flow to hang and return unexpected results.


task ID in

The sound operation from the configured device you want to manipulate or input. Use Sound Output Configure to generate a task ID.



Writes any sound data to the internal buffers. For multi-channel sound data, data is an array of waveforms where each element of the array is a single channel.


error in

Error conditions that occur before this node runs. The node responds to this input according to standard error behavior.

Default: No error



Time, in seconds, that the function waits for the sound operation to complete. This node returns an error if the time elapses. If you set timeout to -1, the node waits indefinitely. If you set timeout to 0, the node returns immediately while the sound continues to play. You can use Sound Output Wait to wait for playback to complete.

Default: 10


task ID out

The manipulated sound operation originally passed to the task ID parameter.


error out

Error information. The node produces this output according to standard error behavior.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

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