Track Layers Specific to the Ambience Urban Collection
The following image displays the tracks of an Ambisonic Ambience Urban subproject,
from all of the subprojects except the Additional subprojects. These projects are
arranged with Layers that form ambient loops.
Track colors vary by layer, and the track names and colors are used similarly
throughout the Ambience Urban subprojects.
The following figure shows the Composite tracks in white. Note that the Stereo
composite is routed to the parent Composites Track, while none of the other
Composite tracks are routed to an output. This is the default configuration of all
the Ambience collection ambisonic projects. Depending on your monitoring system and
your needs, you can unmute a desired Composite track and route it to the Parent
Composites Track. Don’t forget to either mute the Stereo Composite or disconnect its
routing to the Composites Track. The Composites track is in turn routed to the
Master Track, which is configured for 16 channels. The black subtracks of the
Composite tracks have an IEM Plug-In configured to decode the output of the main mix
to the desired multichannel output configuration.
The following figure shows the routing of Stereo Composite Track to its parent
track Composites.
The following figure shows the IEM Plug-In decoding the third-order main mix to
Stereo and its parent composite track, Stereo, routed to its parent,
Composites.
Default Ambience Ambisonic Subproject Configuration
If you unmute any Composite track, select one or more regions, and then render
them, the selected regions are rendered to the Rendered folder in an automatically
generated subfolder named after the Composite track name and configuration. The
names of the files will be the same, but they will contain metadata that indicates
the channel count.
The following image shows some automatically generated folders.
The Basic Layer is the defining characteristic of an ambience. In the Ambience
projects,
the item source files are Octo 3D ORTF recordings split into four-channel files
that represent positions above or below the height of the listener’s head (Lo is
below and Hi is above). Depending on the type of ambience, there is usually a
Modulation Parameter track with one or more envelopes to control characteristics of
the sound.
The Additional subprojects also have Basic Layer tracks. They have items with mono
or stereo source files, these are not mixed using ambisonics.
Depending on the ambience, there might be a Details Layer that has similar
characteristics to the Basic Layer.
The item source files for these are Octo 3D ORTF recordings split into
four-channel files that represent positions above or below the height of the
listener’s head (Lo is below and Hi is above).
Depending on the type of ambience, there is usually a Modulation Parameter track
with one or more envelopes to control characteristics of the sound.
The Additional subprojects might also have Details Layer tracks. They have items
with mono or stereo source files, these are not mixed using ambisonics.
Ambisonic Encoding Tracks
The ambisonic encoding is performed by the IEM MultiEncoder plug-in. The tracks
are positioned at the top of the hierarchy of Loop Layer Tracks. Their output is
routed to the Composite Tracks, where the third-order main mix is decoded to
multiple track configurations simultaneously. In most cases, it is not necessary to
make any adjustments to these tracks.
The subprojects have two Reverb tracks, one for each set of loop tracks, named
Loop 1 Reverb and Loop 2 Reverb.
The Loop 01 and Loop 02 tracks are configured with sends named Reverb 1 and Reverb
2 respectively.
The Loop Reverb tracks have multiple plug-ins that are configured to be controlled
by Modulation Parameters with envelopes to control the gain and size of the
reverb.
Each Reverb Loop track has the following plug-ins.
The incoming audio to the Reverb Loop track is gain controlled, then encoded to
third-order ambisonic, then processed by the Multi EQ and FDN Reverb. You can also
control gain after the Eq and Reverb processing. Some plug-in parameters are
configured to be controlled by the Gain and Size envelopes.