Pyramix Mixer
12 - 123
Ramses MSC reference guide
Pyramix Mixer : Mixer Delay Compensation
all the output busses and
Input
.
Input
is the default and means the strip is fed from a physical live input
and no delay compensation is required. If any Internal or External Return Bus is ticked and
Automatic
Delay Compensation
is turned on, Pyramix calculates the required delay and applies it to all Output buses
not feeding a return bus.
Delay vs. Delay Compensation
When the Input Strip Mode is set to
Input
the delay setting affects the only the delay on the strip’s signal.
When
{any Bus name} Return
is selected as the Input Strip Mode the delay setting affects the delay on all
other output bus signals to ensure correct time-alignment.
Delay Compensation of External Inputs
Where an Output Bus or Aux Bus is used to feed an external processor via a physical output and the exter-
nal processor output is fed back into Pyramix via an external live input, then the necessary delay compen-
sation must be computed and applied by the operator since Pyramix has no means of determining the
delay of the external device. However, the Input Strip Mode (Click on
Input
to pop-up the menu) should be
set to the bus feeding the external processor (as above) so that the input channel delay setting affects
delay compensation rather than simply delaying the signal through the input strip.
In the illustration,
Aux Bus Ext Rev
feeds an external device via physical outputs
17
&
18
. The outputs of
the external device are connected to physical inputs
7
&
8
. The channels’
Mode
has been set to
Ext. FX
Return
and delay compensation of
256
samples applied.
In contrast
Int FX
output bus feeds
Internal Return Busses 1 & 2
(
IB1
&
IB2
). Two channels are fed by
the
IB1
&
IB2
outputs with their mode set to
Int FX Return
.
External Insert Plug-ins
Internal VS3 Engine latency is automatically compensated except for the daughter card I/O latency (for
example a Send/Return on AES/EBU takes 6 samples). Thus you have to manually set the delay of the
external unit plus the I/O latency. It is not possible to change the delay or change the bypass status during
playback or recording.
Determining Delay Compensation for External Effects Loops
One strategy for achieving this is to route a signal directly to an output bus and, via an Aux, to a physical
output, to the external processor’s input. The processors output is connected to a physical Pyramix input
and routed to an input strip. The strip mode must be set to the bus used as the source. Then use impulse
sounds, clicks, rimshots etc. to aid manual adjustment of the delay compensation.
Determining Delay Compensation for External Insert Plug-ins
A similar strategy can be employed here. Route the signal you wish to treat via an External Insert Plug-in to
two input strips. Add the External Insert in one strip only complete with the external processor in circuit.
Delay the untreated strip until the audio is in sync with the treated audio and note the delay value. Then
apply this value in the
Ext. Unit Delay
field in the
External Insert
window.
Input Type pop-up
