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infra:audio

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Audio

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The amplifiers, crossover and parametric equalizers are properly normalized to a uniform audio source.

This has been validated over the dante XLR inputs, Hack-Radio AirPlay, and Hack-Radio MPD.

Do not adjust the amplifiers, the crossover, or the parametric EQ.

LedFX and Aux sends

The PC in the audio rack is hooked up to aux out 1+2 on the mixer. Specific audio channels can be forwarded raw to LedFX as desired, without affecting the master output.

This lets us e.g. receive audio from Flerbruksen and analyze it on our end, without (or with) playing the audio on our speakers

  1. Turn the aux send knobs to max for the channels that should be sent
    1. For stereo channel pairs: Send the left-panned channel to Aux1, and the right-panned channel to Aux2.
    2. For combined stereo channels: Send to both Aux1 and Aux2. The mixer fixes levels for us.
  2. Ensure the aux return is set to infinity for all knobs
  3. Ensure return to aux1 (between level & return knobs) is de-pressed
  4. Align the levels so that we do not redline the audio card in the mix rack (ring around the gain knobs on the Focusrite, see image below)
    1. The level knobs on the mixer should be used if possible
    2. If those are maxed out, adjust the gain knobs on the audio card

Amplifiers

Parametric equalizer

/srv/hackeriet-wiki/dokuwiki/data/attic/infra/audio.1786126591.txt.gz · Last modified: by d404d_idp.hackeriet.no