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Article ID: 818226 - Last Review: March 14, 2007 - Revision: 3.1
Some inserted sound files always play at full volume in PowerPoint
SYMPTOMS
When you play a PowerPoint presentation, the sound
files may not play at the volume that you specify. Some sound files always play
at full volume. This behavior occurs regardless of the sound volume setting
that you specified in the
Edit Sound Object dialog box or on
the
Sound Settings tab in the
Custom Animation
Effects dialog box.
CAUSE
The Media Control Interface (MCI) does not correctly support
volume control for some sound types. MIDI, .wav, and CD audio files have
specific volume control settings in Microsoft Windows. MIDI and CD audio both
have system settings in Windows for these volume controls. MCI follows the
Windows volume control setting.
WORKAROUND
To work around this issue, do one of the following:
- For slideshows that require only one volume of sound,
adjust the system CD audio volume level before slideshow
- For other problematic sound file formats, convert to
another file format such as .wma.
Note Volume settings in PowerPoint consistently work for .aif, .aiff,
aifc., au, .m3u, .snd, and .wma files.
To convert to another file
format, you must use a tool such as Microsoft Plus! Audio
Converter.
To change the volume of a sound file in Sound Recorder:
- In Sound Recorder, click Open on the
File menu.
- In the Open dialog box, double-click
the sound file that you want to modify.
- On the Effects menu, click
Increase Volume (by 25%) or click Decrease
Volume.
Note You can change the volume of an uncompressed sound file only. If
you do not see the green line in Sound Recorder, the file is compressed and you
cannot modify it unless you first adjust the sound quality.
Note Microsoft Plus! Audio Converter is included in the Microsoft
Plus! Digital Media Edition. With Microsoft Plus! Audio Converter, you can
convert multiple files to the .wma file format in a batch
operation.
APPLIES TO
- Microsoft Office PowerPoint 2007
- Microsoft Office PowerPoint 2003
| kbopenfile kbprb KB818226 |
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