The channels section provides controls to set the gain, equalization, panorama and level of each input signal, as well as solo and mute it. It also lets you route each input signal to two auxiliary sends and set them as pre or post-fader. The channel equalizer consists of two shelving filters for high and low frequencies and a semi-parametric peak filter for mid frequencies, implemented as simple bi-quads.

Centroid channels section
Figure 7.16.1: The Centroid's channels section.

  1. Gain: This knob sets the attenuation or amplification of each input signal in decibels from silence at minimum to almost 17 dB at maximum.
  2. EQ high gain: This knob sets the attenuation or amplification of frequencies above 4200 Hz relative to the rest of the frequency spectrum from -24 dB at minimum to 24 dB at maximum.
  3. EQ mid frequency: This knob sets the center frequency of the semi-parametric equalizer for mid frequencies from 240 Hz at minimum to 4200 Hz at maximum.
  4. EQ mid gain: This knob sets the attenuation or amplification of the selected mid frequency relative to the rest of the frequency spectrum from -24 dB at minimum to 24 dB at maximum.
  5. EQ low gain: This knob sets the attenuation or amplification of frequencies under 240 Hz relative to the rest of the frequency spectrum from -24 dB at minimum to 24 dB at maximum.
  6. Aux 1 and 2 sends: These knobs set the volume of the input signal sent to the auxiliary outputs 1 and 2 respectively.
  7. Aux mode: This switch sets both auxiliary sends to pre-fader. When this switch is off, they are set to post-fader.
  8. Pan: This knob sets the panorama of the input signal from hard left to hard right. Note: This knob sets panorama by crossing the left or the right channel to its opposite respectively. This might be relevant when panning a stereo signal.
  9. Level: This slider attenuates the volume of the input signal in decibels.
  10. Peak meter: These indicators show a representation of the volume of the input signal in the left and right audio channels respectively. Above each bar, a clipping indicator lights up whenever the signal volume in the corresponding channel causes clipping to occur.
  11. Mute: This switch silences the sound of the input signal.
  12. Solo: This switch silences the sound of every other input signal.
  13. Label: This display shows a text assigned to the channel for identifying purposes. Double-click it to open a text field that lets you change it.

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