Reference Guide

1540
MP3 Export Options dialog
• Stereo. By selecting Stereo mode, the encoder will create a Stereo MP3 file from a stereo
project by treating the left and right channels as completely independent signals. Unlike Joint
Stereo encoding, stereo encoding will not try to take advantage of similar information in left and
right channels. As a result, Stereo Mode will completely preserve stereo separation without
trying to reduce the data.
• Mid/Side Stereo. Preserves most of the stereo effect of a file but at lower bandwidth. Not too
useful at bit rates above 128 kbs.
Enable High Pass Filter/Low Pass Filter
These filters decrease your file size by eliminating frequencies that people don't usually hear
anyway
Variable Bit Rate Encoding
Instead of producing a constant bit rate throughout the file, the Variable Bit Rate option optimizes
the bit rate in different parts of the file to use a higher bit rate where it will make a difference, and a
lower one where it won’t. This option generally produces a better quality file than constant bit rate
encoding, but doesn’t produce the predictable file size you might need for downloadable files.
Quality Slider
MP3 encoding uses several techniques for analyzing sound and creating MP3 files. The slider
provides the user with the ability to specify how much time the encoder should spend analyzing the
file.
When the slider is positioned to the far left, the encoder will spend more time analyzing and
compressing the file. This will result in the highest quality MP3 file, but it will take longest amount of
time to compress it.
To reduce the time required to encode a project, you can position the slider further to the right. This
will compress files quickly by reducing the time spent analyzing the project. The trade-off for
compressing quickly, or optimizing for speed, is that the resulting MP3 file may have a lower sound
quality.
Encode ID3 Info
Check this box to include ID3 information with your MP3 file. The following fields are where you
enter ID3 information that is stored in your MP3 file and displayed in most applications that play MP3
files.
• Track. The track number.
• Title. The Song title.
• Artist. The performer.
• Album. The album or collection of songs that the song comes from.
• Year. The year the song was made.
• Genre. Select from a list of genres.
• Comment. Track notes.