Delay Compensation (Latency); Insert Compensation - Midas PRO2 Owner's Manual

Chapter 28: Delay Compensation
(Latency)
A time delay is induced in a channel's signal by placing, for example, an insert or GEQ in
its path. This delay affects system latency and can also produce undesirable audio
effects. To overcome this the PRO2 incorporates a system of user-configurable delay
compensation parameters. These are presented to the user in the form of
button-selectable options on the GUI and can be switched on or off to suit the current
application.

Insert compensation

If a channel insert is active, it takes a finite amount of time for the signal to be sent
through an internal or external effect and returned to the channel. Therefore, with no
insert compensation, channels with inserts assigned are delayed more than channels
that don't have an insert assigned to them. If two correlated signals with different
delays are mixed together, this can produce comb filtering.
Figure 17: Input channel insert compensation
PRO2 Live Audio System
Owner's Manual
Input Channel with
external Insert
PEQ /
Delay
DYN
= 0 ms
Input Channel no Insert &
no compensation
PEQ /
Delay
DYN
= 0 ms
Input Channel without Insert &
with compensation
Delay
PEQ /
Delay
= 0.84 ms
DYN
= 1.09 ms
Input Channel with
Internal Insert & with
compensation
Delay
PEQ /
Delay
= 0.26 ms
DYN
= 0.33ms
External FX
Delay through
Delay through
DAC & ADC = 0.84 ms
DAC & ADC = 1.11 ms
DYN /
PEQ
DYN /
PEQ
DYN /
PEQ
Internal FX
Delay through
Delay through
Internal FX = 0.58 ms
Internal FX = 0.7 ms
DYN /
PEQ
Analog input XLR to
Analog input XLR to
Input Channel Direct
Input Channel Output =2.2 ms
Output = 1.79 ms
Analog input XLR to
Analog input XLR to
Input Channel Direct
Input Channel Output =1.08 ms
Output = 0.95 ms
Analog input XLR to
Analog input XLR to
Input Channel Direct
Input Channel Output =2.2 ms
Output = 1.79 ms
Analog input XLR to
Analog input XLR to
Input Channel Direct
Input Channel Output =2.2 ms
Output = 2.2 ms
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