Delay Each input and output channel provides delay from 0 up to 340ms. It can be adjusted in ms, metres or feet and has compensation for temperature.
PEQ The input channels each provide a 4 band fully parametric equaliser, the output channels an 8 band equaliser. Compared with the graphic EQ these are by far more powerful and accurate tools for adjusting frequency response. Selectable band types include HF shelf, LF shelf, bell, notch, HPF, LPF and crossover filter type. Variable or constant Q width can be used. The resulting response is displayed on a frequency curve.
Gate The input channel noise gate is used to turn the channel off when its level falls below a preset ‘threshold’ level. This shuts off unwanted noise such as ambient background pickup, equipment hiss and hum and so on. It provides threshold, depth, hold, attack and release controls. The sidechain can be switched in for frequency selective gating.
Compressor The input channel compressor controls the dynamics of the signal. It can, for example, help the intelligibility of the human voice by reducing the gain of high levels and increasing the gain of low levels, in effect squashing the levels into a more manageable range. The compressor provides threshold, ratio, hard/soft knee, makeup gain, attack and release controls. The sidechain can be switched in for frequency selective compression such as
Sidechain filter This input channel filter can be switched into the gate and/or compressor so that the dynamic response is tailored according to frequency. For example, you can reduce the ‘pumping’ effect of a compressor by slightly cutting the low frequencies in the sidechain, or prevent false opening by triggering a noise gate on the resonant frequency of an instrument using a bell response sidechain filter. Full type and parameter control is provided.
Limiter Each output channel includes a protection limiter to control the maximum level allowed at the outputs. This is typically used to protect loudspeakers and control maximum SPL listening levels. Threshold, attack and release can be controlled.
Faders, mute and polarity The input and output channels each provide a fader, mute switch and polarity reverse. The fader offers +5dB boost above the unity gain ‘0’ position. The matrix provides variable level crosspoints with independent fader control.
Groups and stereo linking Faders can be
grouped so that a master fader takes control of assigned input or output faders. Channels can be linked for stereo operation with single fader level control and linked processing throughout the audio path.
Active monitor bus Any point in the audio signal path can be monitored. This is selected manually or by moving the mouse over an active window. The monitor can ‘ripple through’ several iDR units. With no monitor point selected, the signal from the previous iDR unit is passed through to the output. This means that one monitor output can be used to listen to any point in a multiple iDR system.
Metering Full metering is provided from all the points marked ‘M’ in the diagram. Sidechain level, gain reduction, and stereo monitor meters are included.
Pager Two independent paging systems are provided. They are fully configurable with selectable paging mic, zones affected, and variable ducker depth. They can be triggered from any soft switch and use any soft LED for indication. The switch action can be momentary or latching.
Ducking Any input can override any combination of outputs with variable depth, threshold and release. There are 16 assignable priority levels. Ducking is useful for overriding background music during announcements, recorded messages, jukebox playback and so on.
AMM The automatic mic mixer is popular in conference situations where several microphones can contribute to the mix. Microphones are only opened when they are being spoken into. The overall gain is reduced as more microphones are opened. The amount by which they are reduced is known as the NOM (number of open mics) setting. This maintains a more constant level and helps reduce feedback. The ambient level is the sum of all the mic channels. Threshold adjusts the point at which the microphone opens above the ambient level.
Naming Each input and output channel, and input and output fader group can be named with up to 8 characters for identification in the system.
12 |
