Data Jockey: Audio Output

Data Jockey uses Jack for its audio output. Jack allows Data Jockey's users to easily route their audio output in a variety of ways.

There are currently 3 "audio outputs" for Data Jockey. Two stereo outputs "output" and "cue" and one mono output "measure".

Currently Data Jockey does not provide any way to manage Jack connections internally. You can use the external applications qjackctl or jack_connect for that.

Cue vs. the Main Output

Data Jockey's 2 stereo outputs both output the audio playback from Data Jockey. The main outputs "output0" and "output1" are intended to be used as the primary listening output. The "cue" outputs "cue0" and "cue1" are intended to be used to preview audio before it is output on the main outputs and presented to the audience.

Each mixer has a 'cue' button which determines the output destination, "cue" or "output".

Here is the cue button in its "cueing" state. The mixer associated with this cue button will be sending its audio to the "cue" outputs.

Here is the cue button in its "inactive", "not cueing" state. The mixer associated with this button will be sending its audio to the main outputs.

Measure Output

The "measure" output is an audio rate ramp which counts from 0 to 1 over 4 beats. This allows users to synchronize external, jack enabled, applications, in tempo, with Data Jockey. Eventually Data Jockey will provide other avenues for external synchronization.