Record Sound Signal from DAQmx™ in LabVIEW

Updated Jun 9, 2023

Reported In


  • LabVIEW


  • NI-DAQmx

Issue Details

I am measuring an analog sound signal using a DAQ card and DAQmx functions. How can I save or record this sound signal for later analysis? 


Native LabVIEW functions allow writing waveforms into a WAV file. The Sound Palette contains multiple VIs to Open, Write, and Read WAV files. See the help description for the LabVIEW Sound VIs for further details.

Figure 1: Sound VIs Palette

The Sound and Vibration Toolkit and Sound and Vibration Measurement Suite also contain functions to write waveforms to a WAV file.

Use the shipping example Write Waveforms (DAQmx to WAV File) that acquires data on one channel of a DAQ device and then records that data to a WAV file. It is included in the Sound and Vibration Toolkit.