Audio Output Using LabVIEW's "Play Waveform" Express VI 1.3 2007/06/26 09:24:59 GMT-5 2008/03/17 21:37:59.646 GMT-5 Ed Doering doering@rose-hulman.edu Ed Doering doering@rose-hulman.edu Erik B Luther erik.luther@ni.com Sam D. Shearman sam.shearman@ni.com audio Build Waveform LabVIEW Normalized frequency Play Waveform Express VI Sinusoidal source soundcard Learn how to play an audio signal (1-D array) using your computer's soundcard.

Overview A 1-D array representing an audio signal can be played directly by the computer’s soundcard using the Play Waveform Express VI. The screencast video shows how to listen to an audio signal source (a sinusoid in this example). The 1-D array must first be converted to the waveform data type using the Build Waveform node.

[video] Listen to an audio signal (1-D array) on the soundcard