12.25

DELAY COMPENSATION507
In the picture below, four mixer channels with different Insert FX devices are routed to the Master Section of the main
mixer. Reason checks which mixer channel has the longest combined inherent latency, by summing the effect de-
vice’s reported latencies individually for each channel.
Delay compensation principle for a number of mixer channels routed to the Master Section of the main mixer.
Mix Channel 2 has the longest inherent latency in the example above: 2+10=12 samples. The goal now is to add in-
ternal “invisible delays” to the signals from the other mixer channels so that the total delay for each channel is 12
samples.
This means that for Mix Channel 1 Reason automatically adds a compensation delay of 8 samples (to add up to ‘12’).
Mix Channel 2, which has the longest inherent latency, doesn’t get any delay compensation at all. Mix Channel 3 gets
a delay compensation of 2 samples (to add up to ‘12’) and Mix Channel 4 gets a a delay compensation of 9 samples
(to add up to ‘12’).
Now, the signals from all Mix Channels have a total delay of 12 samples and are thus perfectly “in sync” with each
other when they reach the Master Section.
If you add more effect devices to any of the Mix Channels, the inherent latencies might become longer, and the delay
compensation values are automatically recalculated and adjusted.
Mix Channel 1
To Insert FX
From Insert FX
Effect device
with latency 0
Effect device
with latency 4
Mix Channel 2
To Insert FX
From Insert FX
Effect device
with latency 2
Effect device
with latency 10
Master Section
Mix Channel 3
To Insert FX
From Insert FX
Effect device
with latency 2
Effect device
with latency 8
Mix Channel 4
To Insert FX
From Insert FX
Effect device
with latency 0
Effect device
with latency 3
+8 +2 +9
= Delay Compensation = No Delay Compensation
=4 =12 =10 =3
=12 =12 =12 =12
+0
+0