8.0

Included Effect Plug-ins
Spatial + Panner Plug-ins
131
The upmix algorithm analyzes the incoming audio signal and separates it into parts
of direct sound and ambient sound. While the direct sound parts are sent to the
direct sound stream and can be placed at the virtual front speaker configuration, the
ambient sound parts can be modified and arranged around the virtual stage. Note
that this does not add any additional information to the audio stream. All sound parts
that you hear from the ambient sound were already part of the original audio
material.
IMPORTANTIMPORTANTIMPORTANT
IMPORTANT
If your audio does not contain spatial information, there cannot be an ambient sound
stream. For example, you cannot extract ambient sound from a dry recording of a
narrator sitting in a recording booth.
IMPORTANTIMPORTANTIMPORTANTIMPORTANT
Lossy compression, such as in MP3 files, or other deficiencies of the incoming
audio cannot be remedied using the upmix mode. For example, compression
artifacts can easily be misinterpreted and redistributed to the ambient sound
stream.
Switching to Upmix Mode
• To switch to upmix mode, activate the Enable option in the Upmix section to
the right of the stage view.
NOTE
The upmix algorithm is very sophisticated and can cause a high CPU load.
Therefore, you cannot automate the Enable option.
Stage View
In upmix mode, the parameters are represented by segments of a circle in the stage
view.