Monday 22 March 2010

Signal flow (both video & audio) and the Technical Rig



Audio Signal Flow;
The audio goes into the STOB box, and from the STOB box the audio travels through WIFI into the technical rack, altogether there are 7 mics, so technically all of the 7 mic feeds can go into the audio desk which has faders to let you control the sound levels (Sound Mixing Panel). Next, you choose the output(line out/programme out) and it records in HDD. There is also a VU meter which can show you the sound levels of each individual microphone, in addition to the the overall output. It is very important that the the peak sound level does not go over + 9 or below - 12 on the VU meter, as this could either cause the sound to distort(if too loud) or if the sound is too quiet, it would mean having the volume on really loud so you could hear the speech, which inst really useful to have to have done.

Video Signal Flow;
First off, the light goes in front of the camera and is then concentrated by a lens, the signal then goes to the converter box and converts into a different signal called Serial Digital Interface(SDI), a cable is also plugged into a STOB box and goes into a technical rack, from there the signal then distributes into the CCU ad from there it goes into the VX(vision mixing panel) and the output is selected(again, either line out or programme out) and is recorded into the HDD.

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