If you import a stereo audio file into your Quizmaker '09 quiz and find that the volume level is lower, quieter, or softer than expected, the left and right channels of the audio file may be out of phase. A stereo audio file that is out of phase will not play properly when it is imported into Quizmaker '09.
How to determine if an audio file is out of phase
- Open your audio file in an audio editing program, such as Audacity (which is a free tool).
Zoom in to view a small section of the audio waveform.
- If the left and right audio channels display exact opposite waveform images (mirror images), as shown in the screenshot below, then your audio file is out of phase.
How to correct an audio file that is out of phase
- Open your audio file in an audio editing program, such as Audacity.
Split the stereo track, so that each channel can be modified independently of the other.
Invert one of the channels.
Export the modified audio to a WAV or MP3 file.
Here is a video screencast of this process using Audacity:
How to replace an audio file in Quizmaker '09
After correcting your audio file, you can replace the out of phase audio file in your Quizmaker '09 quiz in this manner:
- Open your quiz in Quizmaker '09.
- Double-click the slide that contains the out of phase audio (to open it for editing).
- Click the Slide View button on the toolbar.
- Select the speaker icon for the out of phase audio track (typically located in the lower left corner of the screen).
- Select the Sound Tools | Options tab at the top of the screen.
- Click the Change Sound button.
- Browse to and select the corrected audio file, and click the Open button.