Algorithm Manual Revision 4
Table Of Contents
  VSS™ 6.1 Reverb
English Manual – Updated 2018-02-28 63
Channel Decay
The following parameters are Decay multipliers 
for the diffuse responses. The multipliers relate 
to the Master Decay time. Example: If the Decay 
time is set at 2 seconds and a multiplier is set at 
0.5, the actual Decay time of the selected chan-
nel is 1 second.
Left
Range: 0.1 to 2.0
Decay multiplier for the Left channel.
Center
Range: 0.1 to 2.0
Decay multiplier for the Center channel.
Right
Range: 0.1 to 2.0
Decay multiplier for the Right channel.
Left Surround
Range: 0.1 to 2.0
Decay multiplier for the Left Surround channel.
Right Surround
Range: 0.1 to 2.0
Decay multiplier for the Right Surround channel.
Center Surround
The diffuse part of the Center Surround channel 
is based upon the Left and Right Surround mul-
tiplier settings.
Gloss
Reverb Modulation
Modulation Type
Range: Off, Default, Front/Rear, Front/
Rear Subtle, Front Rear Diffuse, Left/Right, 
Clockwise, Center Clockwise, Chaos or 
Sync. Select between different types of 
Modulation on the diffused response.
Mod Rate
Range: -50 to + 50
Offsets the speed of the modulation away from 
its default.
Mod Depth
Range: 0 to 200
Offsets the Depth of the modulation away from 
its default.
Early reflections – working for you
Introduction
System 6000 internally renders complex Early 
Reflection patterns with much higher directional 
resolution than a 5.1 or 6.1 speaker set-up can 
discretely provide. Even though all reflection pat-
terns are minutely calculated and tuned, it can 
be useful to scale down their complexity to inte-
grate the room simulation as seamlessly as pos-
sible for a given source material.
VSS™ 6.1 Reverb therefore offers different 
means of reducing the full patterns, making 
each pattern easy to tailor for a wide range of 
applications.
Restrictions in Time – Early 
Start and Early Stop
The Early Start and Early Stop parameters pro-
vide adjustments of when reflections will start 
and when they will end.
Front & Surround Restriction – 
Restrictions in Direction
Range – Front Restriction: 22, 30, 45, 90degrees
Range – Surround Restrictions: 90, 115degrees
By giving weight to certain directions of arrival, 
the user can dramatically change the way a given 
reflection pattern is perceived. In System 6000, 
the distinction between incoming reflections can 
be controlled in a frontal, lateral and dorsal zone 
as shown on the illustration above. On the illus-
tration the grey areas are the directions that are 
reproduced at full level.
Front & Surround Level
Range: Off to 0dB
When the Front Restriction parameter is ad-
justed, the angle between the frontal and lateral 
zone is affected. When the Surround Restriction 
parameter is adjusted, the angle between the 
lateral and dorsal zone is affected. The level of 
reflections arriving from the frontal and dorsal 
zones are controlled by the level controls Front 
Level and Surround Level. If Front Level and Sur-
round Level are set at 0dB, there is no reduction 
of Early Reflection level in either zone.










