Instruction Manual

1368 Dialog Reference
MP3 Export Options dialog
minimizing the data encoded for higher frequency sounds. This can also
improve the compression of the MP3 file, however in some cases the
optimization of high frequency sounds may result in a loss of sound
quality.
• Mono—Create a Mono file
• 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.