D*AP8
61
2 Emphasize Front – Based on setting 1 with a less strict front
projection.
3 Balanced – A balanced distribution of the signal between the front
and rear channels. Without overemphasizing the rear channels.
4 Emphasize Surround – The distribution between the front and rear
channels is highly dependent on the correlation of the input signal.
Highly uncorrelated signals may create emphasized surround channels.
5 Wrap Surround – Even distribution of the signal between all channels,
to create a feeling of being ‘wrapped in sound’ for creating spectacular
effects.
Processing Time (ms)
[3 … 100]
the processing time has great influence on the quality of the upmix
process but of course alters the latency of the audio signal. It is highly
recommended to allow as much processing time as possible. One can
e.g. rise the processing time instead of adding audio delay to
compensate for a delayed video line. Depending on the system latency
requirements (ingest vs. live broadcast) you may change the
processing time accordingly.
.
Center Divergence
[0.0 … 1.0]
the upmix process assembles a center signal from the input stereo.
It may either be fed to the center channel only (0.0) or spread
between L/R (1.0). The effect will be a wider presentation of center
signals in a surround sound image. Please note that the signal does not
completely disappear from one source (L/R or C) depending on the
selected profile.
Surround Gain (dB)
[0 … -24.0]
sets the level of Ls/Rs channels.
Surround Balance Stereo
[0.0 … 1.0]
defines the amount of direct sound mixed into the surround channels.
0.0 provides pure ambient sound while 0.1 to 1.0 will increase the
amount of direct sound. Works only, when upmix mode is set to Stereo
or switched to Stereo in Auto mode.
Surround Balance Mono
[0.0 … 1.0]
defines the amount of direct sound mixed into the surround channels.
0.0 provides pure ambient sound while 0.1 to 1.0 will increase the
amount of direct sound. Works only, when upmix mode is set to Mono
or switched to Mono in Auto mode. For Auto mode lower values (0.2 –
0.4) are recommended to prevent unwanted effects when auto
switching between Mono and Stereo.
LFE Enable
[OFF / ON / Effect Gate]
you may turn this option on if the
upmix process shall generate a
subwoofer signal that will appear in the LFE channel. When using the
Effect Gate function the system interactively processes the subwoofer
signal and generates a signal that comes very close to a real LFE
signal, without creating permanent rumble and bass excitation.
LFE Cutoff Freq (Hz
)
[60, 80, 100, 120]
set the cutoff frequency for the generated LFE signal.
LFE Gain (dB)
[-20.0 … 20.0]
you can set the LFE level here
LFE Effect Gate
[0.0 … -20.0]
Threshold (dB)
set the relative threshold of the Effect Gate processor.
Important Note!
If you encode the surround signals from the upmix to Dolby format we recommend to set
the center and the surround downmix level to -3dB for best downmix compatibility.
