Gate
Purpose
The Gate permits signals above a certain level to pass through while prohibiting or reducing the output level of lower level signals. When the Gate is in its "open" state the input signal passes through un-attenuated. When the gate is in its closed state, the input signal is attenuated as specified by the Depth control.
The Gate waits for a zero crossing before switching between open and closed states. This generally keeps the switch action from being audible and allows the gate to open quickly when adequate signal is detected.
Inputs
The Gate Device has two input nodes. The top input is the Audio input and the bottom input is the Side Chain input. The decision to open or close the gate is based on the peak level of the signal detected at the side chain input. Zero cross detection is performed on the signal at the Audio input.
Outputs
The Gate Device has one output output nodes. The top output is the gated audio output.
Controls
Depth
Specifies the attenuation provided by the gate when in its closed state.
Hold Time
Determines how long the gate will remain open after the side chain signal falls below the Threshold Level.
Open Indicator
When the gate is in its open state this indicator is lit.
Note: The Gate waits for a zero crossing to occur before switching between open and closed states. The Open Indicator accurately reflects the state of the device given this condition. If a DC signal is applied to the input, the gate may not be able to change state for lack of a zero crossing.
Threshold
Specifies the Side Chain peak signal level above which the gate will open.
Schematic
Advanced Topic
The Deluxe Gate device is composed of a Gate Algorithm, a Level device and a Peak Meter.
Related Topics