Omnia Omnia-6EX / EXi Installation And Operation Manual

Contents

Omnia Omnia-6EX / EXi Installation And Operation Manual Manual pdf 39 page image

Omnia-6ex Use and Operation Manual – V: 1.20392. For both the Digital and Analog inputs, an “Audio failure” is defined as “any audio level remaining at orbelow -37.5dBFS for at least 7 seconds”.3. Audio must have actually been ‘detected’ first on an input before the Hunt process can function. Saidanother way, if the Omnia is sitting on the workbench with no audio applied and the Auto and Hunt optionsare enabled, nothing will happen. The Omnia needs to see valid audio FIRST before it can detect theabsence of audio and begin the Auto switch phase.Note that the Input meters and Input Menu Source indications will change to follow the Input Source that iscurrently selected whether it be manually selected by the user or controlled by the Auto Switch function.High-Pass FilterIn most FM systems, subsonic frequencies in the input audio program should usually be rolled off to preventdifficulties with certain exciters and STL systems. The Omnia-6EX has a third-order (18dB/Octave) high pass filterwith five selectable cutoff frequencies from 60 Hz down to 20 Hz. The factory default is “Out”, which means thataudio frequencies to well below 2Hz are passed through the system without attenuation. You may select one of theother values that may be more appropriate for your system.Phase RotatorThis section consists of three, cascaded, second order all pass filter sections. Phase Rotators (also known as PhaseScramblers) are commonly utilized to make asymmetrical waveforms (such as voice) more symmetrical. Thisensures that clipping occurs equally on positive and negative peaks, making better use of the symmetrical nature ofthe FM modulation process. Phase rotation can make talent voice sound cleaner, but since it disturbs the phaseintegrity of musical signals, music might sound more faithful to the original source if phase rotation is not used. Offcan be chosen if previous phase rotation has been performed in your system (in a microphone processor forexample) or to preserve the phase integrity of the original program as described above.