RME HDSPe AIO [62/81] Recording a subgroup loopback

User's Guide HDSPe AIO © RME

26.5 Recording a Subgroup (Loopback)

TotalMix supports a routing of the subgroup outputs (=hardware outputs, bottom row) to the

recording software. Instead of the signal at the hardware input, the signal at the hardware out-

put is sent to the record software. This way, complete submixes can be recorded without an

external loopback cable. Also the playback of a software can be recorded by another software.

To activate this function, click on the white label in the third row while holding down the Ctrl-key.

The label's colour changes to red. In case the channel has already been part of a group, the

colour will change from yellow to orange, signalling that the group functionality is still active for

this channel.

In loopback mode, the signal at the hardware input of the corresponding channel is no longer

sent to the recording software, but still passed through to TotalMix. Therefore TotalMix can be

used to route this input signal to any hardware output. Using the subgroup recording, the input

can still be recorded on a different channel.

As each of the (up to) 20 hardware outputs can be routed to the record software, and none of

these hardware inputs gets lost, TotalMix offers an overall flexibility and performance not rivaled

by any other solution.

Additionally the risk of feedbacks, a basic problem of loopback methods, is highly reduced, be-

cause the feedback can not happen within the mixer, but only when the audio software is

switched into monitoring mode. The block diagram shows how the software's input signal is

played back, and fed back from the hardware output to the software input. A software monitor-

ing on the subgroup record channels is only allowed as long as the monitoring is routed in both

software and TotalMix to a different channel than the active subgroup recording one.