CALREC Putting Sound in the Picture 55INPUT SOURCE ORGANISATIONInput sources may take the formof physical audio input ports, DSPoutputs from the same console,Hydra2 patchbay outputs from otherconsoles connected to the sameHydra2 network, or Hydra2 patchbayinputs the sources of which can beswitched remotely by H2O or 3rdparty controllers.Filtering the Hydra2 networkGiven the shared and hugely scalablenature of the Hydra2 system, yourconsole may be able to access a largenumber of I/O boxes. Many of these willnot be relevant to the show or projectthat is currently being worked on andtheir inclusion in any source lists wouldonly reduce clarity and result in clutter.Apollo provides a method to filter outunwanted I/O boxes so that they do notappear in the patching lists, or anywhereelse in the software. This feature is shownin Fig 1.Open >Hydra2 Settings>Edit Networkscreen in the main application. There willbe two lists shown. The left list shows allHydra2 boxes connected to the network.Selecting a box in this list and pressingthe ‘Add’ button will add that box to thelist on the right. This means it will now bevisible in the console patching screens.Boxes can be removed in a similar wayby selecting one in the right hand list andpressing the ‘Remove’ button.Boxes at different sample ratesNote that now different sample rates areavailable, boxes whose I/O is set to adifferent sample rate to that of the showappear with the SR kHz warning icon toindicate that it cannot be used unless thesample rate of the I/O box is changed inH2O, or a different show is loaded usingthe correct sample rate. See Fig 1.Input portsA port is a physical input to, or output fromthe Apollo system. As all I/O is containedin a Hydra2 network, each input socket ona Hydra2 box can be termed an input port.Hydra2 PatchbaysHydra2 patchbays are virtual patchbayswithin the Hydra2 domain. Like hardwarepatchbays, Hydra2 Patchbays have a setof input ports which are ‘hard wired’ tooutput ports. For port patching purposes,Hydra2 Patchbay inputs are destinationsand Hydra2 patchbay outputs are sources.When a source is patched to a Hydra2patchbay input, it immediately becomesavailable at the corresponding Hydra2Patchbay output.Once configured in H2O, Hydra2patchbays appear as online in the EditNetwork screen and can be added to theRequired list to make them available fromthe I/O patching screens on each console.For example, if a console operatorpatches a direct output to a Hydra2Patchbay input, the Direct Output feedbecomes available to all Hydra2 users(who have been granted access) as thecorresponding Hydra2 Patchbay output.Hydra2 Patchbays are described inmore detail at the end of this section see“Hydra2 Patchbays” on page 80.FIG 1 - EDIT NETWORK SCREENHydra2 Patchbays at differentsample ratesNote that now different sample ratesare available, Hydra2 patchbays can becreated to operate at a different samplerate (as shown in the rate column in Fig 1)to that of the show appear with theSR kHz warning icon to indicate it cannotbe used unless the sample rate of theHydra2 patchbay is changed in H2O or adifferent show is loaded using the correctsample rate.Port labelsI/O boxes have default native port labelsbased on the box ID and port number.These labels can be changed using theH2O application. H2O edited labels willappear on all consoles on the Hydra2network. Labels can also be edited at aconsole level using the main application.Console level edits overrule H2O andnative labels but are only visible on theconsole they were edited on.