4.1

Chapter 4 Advanced adjustments 25
Audio properties
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Channel layout: Use the pop-up menu to manually set the type of audio channel layout. For
more information about audio channel layouts, including the surround sound channel layout,
see About audio channels on page 67.
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Sample rate: Use this pop-up menu to set the number of times per second that music
waveforms (samples) are captured digitally. The higher the sample rate, the higher the audio
quality and the larger the le size.
•
Sample size: Use the pop-up menu to manually set the sample size of the audio signal.
Audio eects
For a list of available audio eects and instructions on how to add an audio eect to a setting,
see Add and remove eects on page 76.
Dolby Digital
The built-in Dolby Digital settings (in the Create Blu-ray and Create DVD destinations, as well as
the built-in AC-3 and EC-3 audio settings) use the Dolby Digital transcoding format. This format
encodes Dolby Digital (AC-3) and Dolby Digital Plus (EC-3) audio les that contain multiple audio
channels, including 5.1 surround sound. You can also create custom settings that use the Dolby
Digital transcoding format.
The properties of built-in and custom settings that use this transcoding format are located in the
General inspector and Audio inspector. These properties are described below.
Important: When you add a setting (or a destination that includes settings) to a job, Compressor
analyzes the source media and then automatically assigns the most appropriate setting
properties (based on the setting’s transcoding format and the characteristics of your source
media le). It’s recommended that you use the automatically assigned setting properties.
Setting summary
Displays the setting name and transcoding format, as well as an estimated output le
size. When you add a setting to a job or change the setting’s properties, this summary
automatically updates.
General properties
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Name: Displays the name of the setting.
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Description: Displays the description of the setting.
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Extension: Displays the extension of the output le.
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Allow job segmenting: Job segmenting is not available for settings that output only an
audio le.
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Default location: Select an item from the pop-up menu to set the default save location for
transcoded les.
•
File type: Select a le type from the pop-up menu—Dolby Digital or Dolby Digital Plus, an
enhanced version of the Dolby Digital audio compression technology.
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