•Ratio: This determines the change in output level. It is a function of the change in input level (at full compression), once the threshold has been fully exceeded. It is calibrated in decibels, with a range from 1.0:1 (off) to 20:1. Thus, if it is set to 10:1, an increase in input level of 10 dB results in a 1 dB increase in output level. This assumes the input is above the threshold level.
Generally, use ratio settings from 1.5:1 to 5.0:1 for compressor use. Settings from 10:1 to 20:1 are more useful for limiting purposes. This is because in that range the output level changes very little as the input increases.
•Output: This determines the overall gain of the compressor from input to output (as measured with the signal below the threshold level). You can use this control to compensate for the loss of gain caused by the action of the compressor. It is calibrated in decibels, with a range from 0 dB (unity) to +20.0 dB.
•Range: This determines the amount of attenuation of the input signal when the gate is closed. It is calibrated in decibels, ranging from
Delay
Click this button to view the Delay settings for a selected output. Click the output letter buttons
Gate
Click this button to view the Gate for a selected input. Click an input SELECT button to select an input.
Click the On button to activate the Gate for the selected input. The Reset button returns all the knobs to their default settings.
The Gate has four knobs: Hold, Release, Threshold, and Range. Click and drag on the individual knobs to adjust each parameter. An
Click the right mouse button over the processor display to bring up a menu that allows you to cut, copy, or paste the processor settings to another channel.
About Gating:
A gate is used to duck or mute a channel when the signal level drops below a certain point. This can reduce the overall noise level in your mix by muting unused or noisy channels.
Note: When we say the gate opens, it means the gate is not acting on the signal and the signal is allowed to pass. When the gate closes, the gate acts on the signal by attenuating it.
•Threshold: This determines the level below which the gate closes (and above which it opens). It is calibrated in decibels, ranging from
•Hold: This determines how long the gate remains open after the input signal has fallen below, and remains below, the threshold before closing. It is calibrated in milliseconds, ranging from 0 ms to 2550 ms (2.55 sec).
•Release: This determines how fast the gate closes after the hold time has expired. It is calibrated in milliseconds, ranging from 10 ms to 2500 ms (2.5 sec) per 20 dB of gain change.
Click the On button to activate the Delay Line. The Delay Line has two knobs: Coarse, and
Fine. Click and drag on the individual knobs to adjust each parameter.
Coarse: This control adjusts the delay in 1 millisecond increments, with a range from 0 ms to 200 ms. The equivalent distance the sound travels in the selected amount of time is displayed. Use this control when setting up a delay between two speakers, as in a delay tower.
Fine: This control adjusts the delay in small increments (22.7 ∝s), with a range from 0 ∝s to 997 ∝s. The equivalent distance the sound travels in the selected amount of time is displayed. Use this control to adjust for offsets between drivers in a stack. For example, use this control to
In addition, it is necessary to enter the ambient air temperature in the Delay/Distance Parameters window (click Advanced in the top menu bar and select Set Temperature). The speed of sound varies with air temperature, and this value is needed to accurately calculate the time delay required as a function of distance traveled (see "Set Temperature" on page 16). You can also choose between US units (Fahrenheit/Feet/Inches) and Metric units (Celsius/Meters/Millimeters) in the Delay/Distance Parameters window.
Click the right mouse button over the processor display. This brings up a menu allowing you to cut, copy, or paste the processor settings to another channel.
X-Over
Click this button to view the 1 to
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