User`s guide

E-Prime User’s Guide
Appendix C: Sample Experiments
Page A-44
The SoundFile attribute is used in the Filename field of the properties for the SlideSoundOut sub-
object. At run-time, the SlideSoundOut refers to the TrialList object in order to resolve the value
for SoundFile.
The Sound device is enabled via the Devices tab in the Properties pages for the Experiment
object. The properties for the Sound device may be edited by selecting the Sound device, and
clicking the Edit button. The format for the creation of the audio buffer must be set globally via
the Experiment object. The wav files presented by SoundRT are 1 channel (mono) sampled at
22050 KHz, and 8 bits per sample. All audio files must be saved in the set format.
Change the stimulus/sound
The visual or audio stimuli may be changed by opening the TrialList and modifying the values for
the Stimulus and SoundFile attributes.
Stop/Continue playback after response
To stop playback upon input from the subject, choose “Terminate” in the EndAction field in the
SlideObject (i.e., Stimulus) Property pages. Then select “Yes” in the StopAfter field of the
property pages of the SoundOut. To continue the playback after a response, choose the “No”
option in the StopAfter field of the SlideSoundOut.