Apple Logic Pro 9 - Manual (Page 840)

• Quality pop-up menu: Keep this set to Highest (the default) whenever possible. Reducing
the quality accelerates the conversion process, but at the expense of audio quality.
• “Use best encoding” checkbox: Like the Quality parameter, if you deselect this option,
you gain encoding speed at the price of audio quality. This should always be selected,
unless conversion time is an issue.
• “Filter frequencies below 10 Hz” checkbox: When this option is selected (the default),
frequencies below 10 Hz (which are usually not reproduced by speakers, and are not
audible to human ears at any rate) are removed. This leaves slightly more data
bandwidth for the frequencies that are audible, resulting in an improvement of the
perceived quality. Only deselect this option if you’re experimenting with subsonic test
tones.
• Stereo Mode pop-up menu: You can choose Joint Stereo or Normal stereo mode.
Depending on the original file, these settings may (or may not) offer any audible
difference. Experiment with both settings to determine your preference.
• “Write ID3 tags” checkbox: Select this option to write ID3 tags to the file.
• ID3 Settings button: Click this button to open a dialog where you can edit and configure
ID3 tags.
All entries are made by double-clicking the Content column fields to the right of the
corresponding ID3 Frame column entry, and typing in your text.
840 Chapter 29 Bouncing Your Project