Audio Mixer Interface

The audio mixer interface allows you to control the mix levels for all the incoming channels to a mix layer, as well as the master level for the output of that layer. The Main layer also has a monitor output and level.

Figure: Audio Mixer Tab

  1. Audio Channel Strips — Each strip controls the input from that audio channel. Strips are color coded for where the audio comes from. The controls available on each strip depend on the source of the audio.
    • Bal: — adjust the volume of the left and right stereo channel. For example, as you move the slider to the right the volume of the right channel is increased and the volume of the left channel is decreased.
    • Gain — adjust the amount gain (loudness) that is applied to the input audio channel before the mixer.
    • Pan — adjust the amount of the left or right input channel that is part of each channel before the mixer. For example, as you move the slider to the right you get more of the left channel in the right channel and the volume of the left channel decreases.
    • Phantom (48V)(Gain/Pan) — apply 48V to the analog input XLR jack (On) to power a microphone (condenser microphone).
    • PAD (-20dB)(Gain/Pan) — apply -20dB of attenuation to the input signal (On) to prevent clipping of very loud signals.
    • Mute — turn off the audio from this source. This does not change the level.
    • Pre/Post — select whether the audio source on an Aux layer is taken before the fader (Pre) or after (Post) the source fader. If an audio source is taken before the fader, the source fader has no impact on the level of the audio going out the aux layer.
    • Slider — adjust the level of the audio from the source. You can either move the slider manually or enter a value in the text field at the bottom of the slider.
    • AFV — turn Audio Follow Video (AFV) on or off for this audio source. AFV is only available for audio that is associated with a video source, such as embedded audio on input BNCs and from the Media-Store. When AFV is on, the audio level is taken to the AFV Set level when the associated video source is taken on-air. The audio level is taken to -infinity when the video source is taken off-air.
    • AFV Set — the maximum level that you want the audio to rise to when the associated video source is taken on-air. To set the AFV level, move the slider to the level you want the audio to be at and click AFV Set. The AFV Set button turns on when the slider is at the AFV set level.
    • Solo — mute all other audio sources but the one(s) you turn solo on for. This allows you to quickly isolate a source without having to mute all the other sources. When Solo is turned on for a source a warning light flashes red on the main (master) strip.
    • PFL — turn Pre Fader Listen (PFL) on or off for this audio source. This is similar to solo in that it mutes all other sources, but only affects the Monitor (headphone) output. The Main output is not affected by PFL. When PFL is turned on for a source a warning light flashes red on the monitor strip.
    Tip: You can move a slider at any time to bring up an audio source even if the associated audio source is not on-air. This audio source will remain at the selected level until it is brought down again manually or is included in a transition with AFV turned on.
  2. Main Level Controls — The Main and Monitor strips control the levels of the output audio for the mixer. If you select an Aux output this strip changes to control the level for that output.
      • Slider — adjust the level of the audio output. You can either move the slider manually or enter a value in the text field at the bottom of the slider.
      • Solo Clear — turn solo off for all sources on this audio layer.
  3. Layer Controls — select the audio layer that you want to control. Each layer is assigned to an audio output.
  4. Included Channels — select whether only the audio sources that have been assigned to each layer are shown (Custom), or whether all audio sources are shown (All).