4.2

Data rate: Use the slider to set the number of kilobits per
second (kbps) required to deliver your audio file. Using a
higher rate will produce a higher-quality audio file.
Use variable bit rate encoding: Select the checkbox to vary the
number of bits used to store the music depending on the
complexity of the music. Variable bit rate encoding can reduce
the size of the output file.
Joint stereo: Select the checkbox to have one channel carry
the information that’s identical on both channels, and another
channel carry unique information. At bit rates of 160 kbps and
below, this setting can improve the sound quality of your
converted audio.
Smart encoding adjustments: Select the checkbox to have
Compressor analyze the source file and the setting’s encoding
properties to maximize the quality of the output file.
Filter frequencies below 10 Hz: Select the checkbox to have
Compressor remove inaudible frequencies from the source file
and output a smaller and more efficient file without perceptible
loss of quality.
Audio effects
For a list of available audio effects and instructions on how to add
an audio effect to a setting, see .
MPEG-2
The built-in MPEG Files settings (including the built-in MPEG-2 for
DVD setting) use the MPEG-2 transcoding format. This format
encodes MPEG-2 stream files for SD DVD and Blu-ray authoring.
Add and remove effects